Common Core Math - HS Geometry
Lesson Plan
Prove theorems about lines
Goals / Objectives
Prove that vertical angles are congruent using the properties of linear pairs and supplementary angles
Prove that when a transversal crosses parallel lines, alternate interior angles are congruent
Prove that when a transversal crosses parallel lines, corresponding angles are congruent
Prove the Perpendicular Bisector Theorem: points on a perpendicular bisector of a segment are exactly those equidistant from the segment's endpoints
Construct logical proofs using both two-column and paragraph formats, citing definitions, postulates, and previously established theorems as justifications
Standards
HSG.CO.C.9
HSG.CO.C.9: Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment's endpoints.
Academic Vocabulary
Not in our source material
Materials
Enrichment
Accommodations
Not in our source material