Angle Relationships, Complementary, Supplementary, Triangle Sum Theorem

Find the missing angle.

• 60°
• 70°
• 50°
• 140

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

What are supplementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect

• x = 118
• x = 108
• x = 28
• x = 58

Find the supplement of the angle

• 160 degrees

• 20 degrees

• -70 degrees

• 180 degrees

Are these angles an example of complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither

Are these angles an example of complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither

These angles are...

• Complementary
• Supplementary
• Neither

What is the measure of the missing angle?

• 39
• 129
• 119
• 129

• x = 56

• x = 66

• x = 156

• x = 166