Angles

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

What are vertical angles?

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

• 100°
• 80°
• 90°
• 180°

• 100°
• 80°
• 90°
• 180°

_{These are Complementary angles. Find x.}

• 15
• 25
• 75
• 90

Find what the value of x.

• 118
• 108
• 28
• 58

If angle ∠ABD is 67°. What is ∠DBC?

• 180°
• 90°
• 67°
• 23°

Find the value of x.

• 38°
• 52°
• 142°
• 152°

Find the missing angle.  Find x.

• 20^o
• 70^o
• 160^o
• 180^o