Chapter 1 Exploring Geometry.

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Presentation transcript:

Chapter 1 Exploring Geometry

1.7 Using Deductive Reasoning

Drill 1) A B C If AB is 3x and BC is 2x + 10, find BC if AC equals 80 feet. 2) Does the ceiling and your desktop represent parallel planes? (WHY) 3) How many points do we need to name a plane?

Types of Angles Vertical Angles Vertical Angles are angles that are opposite each other where two lines intersect. Ex : 1 & 3 as well as 2 & 4

Types of Angles Adjacent Angles Adjacent Angles are angles that share a common endpoint and share a common ray. Ex : Angles A and B

Types of Angles Complementary Angles Two angles that have a sum of 90 degrees.

Types of Angles Supplementary Angles Two angles that have a sum of 180 degrees.

Guided Practice

Classwork Pages 50 – 51 #’s 14 – 18, 22

Homework Worksheet # 1.7

1.8 The Coordinate Plane

Formulas The Distance Formula

Midpoint Formula

Classwork Pages 56 – 57 #’s 8, 10, 14, 16, 18, 20

Homework Worksheet # 1.8