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Activity 3.8
Assignment 5.19
Using CPCTC: Flow Charts
Objective
Complete proofs in flow chart form that use congruent triangles and CPCTC to prove geometric relationships.
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Assignment 3.9
About Geometry Worksheet Assignment 5.19:
Assignment 5.19 is an introduction to using CPCTC to prove geometric relationships using flow charts.
Prerequisite Skill: Use flow charts to prove congruent triangles and use CPCTC to prove pairs of sides and angles of triangles congruent (Assignment 5.17).
Definitions: Definition of Isosceles Triangle: A triangle that has two congruent sides is isosceles.
Definition of Midpoint: A point that divides a line segment into two congruent line segments is a midpoint..
Theorems: Alternate Interior Angle Theorem: Lines intersected by a transveral so that the alternate interior angles are congruent are parallel.
Perpendicular Lines Theorem: Two lines that intersect to make congruent adjacent angles are perpendicular.