Angle Relationships

Identify the relationship:

• vertical

• supplementary

Identify the relationship:

• vertical

• supplementary (angles add up to 180^o)

• complementary (angles add up to 90^o)

∠1 and ∠3 can best be described as -

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

Solve for x

• 6
• 140
• 20
• 90

If m∠1 = 30°, then m∠3 = 

• 30°
• 60°
• 150°
• undetermined

Vertical angles are always

• acute
• total 180 degrees
• congruent (equal measures)
• adjacent angles

complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°
• 90°
• 180°
• 360°

_{What type of angle is shown?}

• a 90 degree angle
• a 180 degree angle
• an acute degree angle
• an obtuse angle

Find the measure of the missing angle.

• 47

• 57

• 53

• 133