Introduction to Geometry

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Presentation transcript:

Introduction to Geometry Unit 1 – 3 Angles

Angles

Words to live by…ANGLES Acute Angle Obtuse Angle right Angle straight Angle

Words to live by…ANGLES Complementary angles Supplementary Angles Vertical Angles Linear Pair

Naming Angles A C B It takes three (3) points to name an angle. On some occasions, you can use the vertex as the name.

C D B A E F

In your composition notebook…. Create a 60o angle and name it Create a 135o angle and name it Create a 15o angle And name it Create any angle and have your partner measure it.

Y X Z 44 V W

a+12 a W V X What is the angle relationship ______________________________ Find the value of (a) Then find the measure of both angles

z 4xo xo T V W Y 1. What angle relationships are presented? 2. Find the value of (x) and measure of all angles

1. What is the supplement of an angle whose measure is 117o? 2. What is the Complement of an angle whose measure is 68o? 3. Can you come up with an angle that does not have a complement?

1. If m T = (5x – 10)o, find the measure of the supplement and the complement. 2. an angle’s measure is 5o less than 3 times the measure of its supplement. Find the measure of the angle and its supplement