Angle Addition and Angle Bisector

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.

Tags

CCSS.7.G.B.5

What term is used to describe a pair, or group, of angles that equal 180 degrees?

• Supplementary Angles
• Complementary Angles
• Vertical Angles
• Congruent Angles

Tags

CCSS.7.G.B.5

What kind of angles are shown?

• complementary
• supplementary
• adjacent
• corresponding

Tags

CCSS.7.G.B.5

• x = 118
• x = 108
• x = 28
• x = 58

Answer explanation

The angles are supplementary, so they add up to 180! 180-62=118

Tags

CCSS.7.G.B.5

∠1 and ∠3 can best be described as -

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

Tags

CCSS.7.G.B.5

Calculate m∠ABC.

• 45°

• 60°

• 105°

• 15°

Answer explanation

Part + part = whole

45+60=105

Tags

CCSS.4.MD.C.7

Find m∠EFG

• 37°

• 18°

• 56°

• 19°

Answer explanation

Part + part = whole

37 + 19 = 56

Tags

CCSS.7.G.B.5

Find m∠A.

• 25°

• 30°

• 35°

• 90°

Answer explanation

These angles are complementary, so they should add up to 90.

90 - 65 = 25

OR

65 + x = 90

Tags

CCSS.7.G.B.5

• 50°

• 58°

• 115°

• 226°

Answer explanation

Part + part = whole

88 + ? = 138

∠NME = 50

Tags

CCSS.4.MD.C.7

If m∠ABC = 103° find x.

(a)  

Answer explanation

Part + part = whole

3x + 1 + 4x - 3 = 103

7x - 2 = 103

Tags

CCSS.7.G.B.5