Angles and Relationships

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°

Does a triangle with these side lengths exist?
20, 10, 9

• Yes
• No

Do the following side lengths form a triangle?
2 inches, 2 inches, 4 inches

• Yes
• No

Is it possible to find the complement angle of 103°? If so, what is it? 

• Yes, the complement angle is 77°
• Not possible. 
• Yes, the compliment angle is 83°
• Yes, the complement angle is 13°

What type of angle is shown?

• acute
• obtuse
• right 
• straight

What type of angle is shown?

• acute
• obtuse
• right
• straight