Measure and classify angles. Identify and use congruent angles and the bisector of an angle. Splash Screen
Mathematical Practices 5 Use appropriate tools strategically. Content Standards G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc. G.CO.12 Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Mathematical Practices 5 Use appropriate tools strategically. 6 Attend to precision. CCSS
ray degree right angle acute angle opposite rays angle obtuse angle angle bisector opposite rays angle side vertex interior exterior Vocabulary
Vocabulary
Vocabulary
A. Name all angles that have B as a vertex. Angles and Their Parts A. Name all angles that have B as a vertex. Example 1
Angles and Their Parts B. Name the sides of 5. Example 1
Angles and Their Parts C. Example 1
A. Example 1a
B. Example 1b
Which of the following is another name for 3? Example 1c
Vocabulary
Concept
A. Measure TYV and classify it as right, acute, or obtuse. Measure and Classify Angles A. Measure TYV and classify it as right, acute, or obtuse. Example 2
Measure and Classify Angles Example 2
Measure and Classify Angles Example 2
A. Measure CZD and classify it as right, acute, or obtuse. Example 2a
B. Measure CZE and classify it as right, acute, or obtuse. Example 2b
C. Measure DZX and classify it as right, acute, or obtuse. Example 2c
Example 3
Measure and Classify Angles INTERIOR DESIGN Wall stickers of standard shapes are often used to provide a stimulating environment for a young child’s room. A five-pointed star sticker is shown with vertices labeled. Find mGBH and mHCI if GBH HCI, mGBH = 2x + 5, and mHCI = 3x – 10. Example 3
Find mBHC and mDJE if BHC DJE, mBHC = 4x + 5, and mDJE = 3x + 30. Example 3
Homework Page 41 (12-36) / Page 42 (37-42) CCSS