Linear Pair and Vertical Angles
Lesson Plan #17
Class: Geometry Date: Friday/Monday November 6th/9th 2020
Topic: Using postulates and definitions to prove statements in geometry
Aim: Students will be able to use postulates and definitions to prove statements in geometry?
Objectives:
Students will be able to use definitions, postulates and theorems to prove statements.
Note:
• Test #3 December 3rd or December 4th
• Below are the theorems we proved previously
o Theorem - If two angles are right angles, then they are congruent.
o Theorem - If two angles are straight angles, then they are congruent.
o Theorem - If two angles are complements of the same angle, then they are congruent.
o Theorem - If two angles are supplements of the same angle, then they are congruent.
o Theorem – If two angles are congruent, their complements are congruent.
o Theorem – If two angles are congruent their supplements are congruent.
Do Now:
Recall the definition of a linear pair:
A linear pair of angles are two adjacent angles whose sum is a straight angle.
Fill in the missing reason in the proof
Given:
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