Main Idea and New Vocabulary NGSSS Key Concept
Main Idea and New Vocabulary NGSSS Key Concept: Pairs of Angles Example 1: Identify Angles Example 2: Identify Angles Example 3: Find a Missing Angle Measure Five-Minute Check
• Identify complementary and supplementary angles and find missing angle measures. • complementary angles • supplementary angles
MA. 8. G. 2. 2 Classify and determine the measure of angles, including angles created when parallel lines are cut by transversals.
Identify Angles Identify the pair of angles as complementary, supplementary, or neither. Answer: Since 128° + 52° = 180°, the angles are supplementary.
Identify the pair of angles as complementary, supplementary, or neither. A. complementary B. supplementary C. neither
Identify Angles Identify the pair of angles as complementary, supplementary, or neither. x and y form a right angle. Answer: So, the angles are complementary.
Identify the pair of angles as complementary, supplementary, or neither. A. complementary B. supplementary C. neither
Find a Missing Angle Measure ALGEBRA Find the value of x. Since the two angles form a straight angle, they are supplementary.
Find a Missing Angle Measure 56 + x = 180 – 56 Write the equation. Subtract 56 from each side. x = 124 Answer: So, the value of x is 124.
ALGEBRA Find the value of x. A. 30 B. 50 C. 60 D. 80
Identify the pair of angles as complementary, supplementary, or neither. A. complementary B. supplementary C. neither
Identify the pair of angles as complementary, supplementary, or neither. A. complementary B. supplementary C. neither
Identify the pair of angles as complementary, supplementary, or neither. A. complementary B. supplementary C. neither
Find the value of x. A. 55 B. 65 C. 145 D. 180
Tell whether the following statement is true or false. Angles are complementary if the sum of their measures is 180°. A. true B. false
1 and 2 are complementary angles and m 1 = 57°. What is the measure of 2? A. 33° B. 43° C. 57° D. 123°
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