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Geometry Course Outline

Every unit and lesson in Geometry, with proof built into each unit, from reasoning and transformations to circles, area and volume. Unit 10 covers the honors-track conic sections.

10 units58 lessons10 unit reviewsPrerequisite: Algebra 1

Try the student practice samples in the first expanded unit below. The detailed notes will be discussed during the course, with worked examples, guided practice, and time for questions. Enroll to work through the remaining lessons with your tutor.

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1Unit 1: Foundations and ReasoningUndefined terms, measurement, coordinate formulas, logic and the first proofs.7 lessons + review
  • 1.1

    Points, Lines and Planes

    Use undefined terms, postulates and notation.

    MCQ Sample
  • 1.2

    Segments and Distance

    Measure segments and use the Segment Addition Postulate.

    FRQ Sample
  • 1.3

    Angles and Angle Pairs

    Classify angles and use complementary, supplementary and vertical pairs.

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  • 1.4

    Midpoint and Distance in the Coordinate Plane

    Apply the midpoint and distance formulas.

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  • 1.5

    Inductive Reasoning

    Make and test conjectures from patterns.

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  • 1.6

    Conditional Statements and Deductive Reasoning

    Write converses, inverses and contrapositives and use logic laws.

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  • 1.7

    Algebraic and Two-Column Proofs

    Write the first two-column proofs.

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  • 1R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 1.

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2Unit 2: Parallel and Perpendicular LinesAngle pairs formed by transversals, proving lines parallel and the triangle angle sum.5 lessons + review
  • 2.1

    Lines and Transversals

    Name angle pairs formed by a transversal.

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  • 2.2

    Proving Lines Parallel

    Use converses to prove lines are parallel.

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  • 2.3

    Perpendicular Lines

    Prove and apply theorems about perpendicular lines.

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  • 2.4

    Slopes of Parallel and Perpendicular Lines

    Use slope to classify and write lines.

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  • 2.5

    The Triangle Angle-Sum Theorem

    Prove the angle-sum and exterior-angle theorems.

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  • 2R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 2.

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3Unit 3: TransformationsRigid motions and dilations on and off the coordinate plane, and symmetry.6 lessons + review
  • 3.1

    Translations

    Translate figures with vectors and coordinate rules.

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  • 3.2

    Reflections

    Reflect figures over lines, including y = x.

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  • 3.3

    Rotations

    Rotate figures about a point by given angles.

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  • 3.4

    Compositions of Transformations

    Combine transformations and find a single equivalent one.

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  • 3.5

    Dilations

    Enlarge and reduce figures by a scale factor.

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  • 3.6

    Symmetry

    Identify line and rotational symmetry.

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  • 3R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 3.

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4Unit 4: Congruent TrianglesCongruence through rigid motions, the triangle congruence criteria and CPCTC proofs.5 lessons + review
  • 4.1

    Congruence and Rigid Motions

    Define congruence through rigid motions.

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  • 4.2

    SSS and SAS Congruence

    Prove triangles congruent by SSS and SAS.

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  • 4.3

    ASA, AAS and HL Congruence

    Prove triangles congruent by ASA, AAS and HL.

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  • 4.4

    Proofs with Corresponding Parts

    Use CPCTC to prove parts congruent.

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  • 4.5

    Isosceles and Equilateral Triangles

    Apply the base angles theorem and its converse.

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  • 4R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 4.

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5Unit 5: Relationships in TrianglesBisectors, medians, altitudes, midsegments and the triangle inequalities.4 lessons + review
  • 5.1

    Perpendicular and Angle Bisectors

    Use bisector theorems; find circumcenters and incenters.

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  • 5.2

    Medians and Altitudes

    Locate centroids and orthocenters.

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  • 5.3

    Midsegments

    Apply the Triangle Midsegment Theorem.

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  • 5.4

    Triangle Inequalities

    Order sides and angles and test possible side lengths.

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  • 5R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 5.

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6Unit 6: Quadrilaterals and PolygonsAngle sums of polygons and the properties and proofs of special quadrilaterals.6 lessons + review
  • 6.1

    Polygon Angle Sums

    Find interior and exterior angle sums of polygons.

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  • 6.2

    Properties of Parallelograms

    Use side, angle and diagonal properties of parallelograms.

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  • 6.3

    Proving a Quadrilateral Is a Parallelogram

    Prove parallelograms with the five tests.

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  • 6.4

    Rectangles, Rhombuses and Squares

    Classify special parallelograms by their diagonals.

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  • 6.5

    Trapezoids and Kites

    Use properties of trapezoids, midsegments and kites.

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  • 6.6

    Coordinate Proofs

    Prove properties of figures with coordinates.

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  • 6R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 6.

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7Unit 7: Similarity and Right TrianglesSimilarity criteria, proportionality theorems, the Pythagorean Theorem and right-triangle trig.7 lessons + review
  • 7.1

    Ratios and Proportions

    Solve proportions and use geometric means.

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  • 7.2

    Similar Polygons

    Identify similar polygons and scale factors.

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  • 7.3

    AA, SSS and SAS Similarity

    Prove triangles similar.

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  • 7.4

    Proportionality Theorems

    Use the Side-Splitter and Angle Bisector theorems.

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  • 7.5

    The Pythagorean Theorem and Its Converse

    Find missing sides and classify triangles.

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  • 7.6

    Special Right Triangles

    Use 45-45-90 and 30-60-90 relationships.

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  • 7.7

    Right-Triangle Trigonometry

    Use sine, cosine and tangent to solve right triangles.

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  • 7R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 7.

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8Unit 8: CirclesTangents, arcs, chords, inscribed angles, segment relationships and circle equations.6 lessons + review
  • 8.1

    Parts of a Circle and Tangents

    Identify parts of a circle and use tangent properties.

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  • 8.2

    Arcs and Chords

    Measure arcs and use chord relationships.

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  • 8.3

    Inscribed Angles

    Use the Inscribed Angle Theorem and its corollaries.

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  • 8.4

    Angle Relationships in Circles

    Find angles formed by chords, secants and tangents.

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  • 8.5

    Segment Relationships in Circles

    Use segment products for chords, secants and tangents.

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  • 8.6

    Equations of Circles

    Write and graph circles in standard form.

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  • 8R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 8.

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9Unit 9: Perimeter, Area and VolumeArea of plane figures, arc length and sectors, and surface area and volume of solids.8 lessons + review
  • 9.1

    Perimeter and Area of Polygons

    Find perimeter and area of triangles and quadrilaterals.

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  • 9.2

    Circumference, Arc Length and Sector Area

    Compute circumference, arc length and sector area.

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  • 9.3

    Area of Regular Polygons

    Use apothems to find areas of regular polygons.

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  • 9.4

    Surface Area of Prisms and Cylinders

    Find lateral and total surface area.

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  • 9.5

    Surface Area of Pyramids, Cones and Spheres

    Find surface area using slant height.

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  • 9.6

    Volume of Prisms and Cylinders

    Apply Cavalieri's principle and volume formulas.

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  • 9.7

    Volume of Pyramids, Cones and Spheres

    Find volumes of pointed solids and spheres.

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  • 9.8

    Cross Sections and Solids of Revolution

    Describe cross sections and solids formed by rotation.

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  • 9R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 9.

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10Unit 10: Conic SectionsHonorsCircles, parabolas, ellipses and hyperbolas from their geometric definitions (honors track).4 lessons + review
  • 10.1

    Circles as Conic Sections

    Derive the circle equation and complete the square.

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  • 10.2

    Parabolas

    Use focus and directrix to write parabolas.

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  • 10.3

    Ellipses

    Find foci, vertices and axes of ellipses.

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  • 10.4

    Hyperbolas

    Find foci, vertices and asymptotes of hyperbolas.

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  • 10R

    Unit Review

    Mixed practice and a unit-test-style free-response set covering every lesson in Unit 10.

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Independently developed by Code Scholars Tutoring. Lesson order and pacing can be adapted to the student’s school syllabus.