• Vertical Angles and Linear Pairs, Postulates, and Linear Pair Postulate Bell Ringer
• Complete by Wednesday next week
• No success on Monday
Unit 1 Lesson 2 Quiz
• p. 30
• Questions 2-4
Discuss Row 3 Investigation
• OYO p. 40 #1 Complete Row 3 Homework
• A pair of adjacent angles that are formed when 2 lines intersect…total 180 Linear Pair:
• Basic math facts that are accepted as true w/o proof Postulates:
• Mathematical statements /facts that are proven using deductive reasoning Theorems:
• 2 lines that intersect to form a right angle (90)
• We proved they form 4 right angles
Perpendicular Lines:
• If two angles are a linear pair, then the sum of their measures is 180
Linear Pair
Postulate:
• Vertical angles are congruent
• Occur whenever 2 lines intersect
Vertical Angles
Theorem
• Substitution
• Addition, Subtraction, Multiplication, and Division
Properties of Equality
• If a = b and b = c, then a = c
• Similar to the Substitution POE Transitive POE
• SSS, SAS, ASA, AAS, HL
Triangle Congruency Theorems:
• Corresponding Parts of Congruent Triangles are Congruent CPCTC
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1. 1. Given
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1. 1. Given
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If 2 intersecting lines are perpendicular, then they form a right angle
If 2 intersecting lines form a right angle then they are perpendicular
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1. 1. Given
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LBA P
0°127
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LQ
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1. 1. Given
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0°
247
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