Angle Relationships

Classify the angle

• right

• obtuse

• acute

• straight

Classify the angle

• right

• acute

• obtuse

• straight

Classify the angle

• acute

• obtuse

• right

• straight

Classify the angle

• acute

• obtuse

• right

• straight

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°

The angle relationship shown is - 

• complementary angles
• supplementary angles
• vertical angles
• adjacent angles

If m∠1 = 30°, then m∠3 = 

• 30°
• 60°
• 150°
• undetermined

Find the value of x.

• 18°
• 28°
• 38°
• 118°