Triangle Sum Theorem

70° + 70° + ? = 180°

• 35°

• 70°

• 40°

• 140°

Tags

CCSS.8.G.A.5

? + 90° + 50° = 180°

• 40°

• 50°

• 140°

• 180°

Tags

CCSS.7.G.B.5

? + 52° + 87° = 180°

• 51°

• 46°

• 41°

• 31°

Tags

CCSS.8.G.A.5

? + 38° + 90° = 180°

• 58°

• 52°

• 48°

• 42°

Tags

CCSS.7.G.B.5

What is the measure of angle DFE?

43° + 84° + ? = 180°

• 43°

• 53°

• 68°

• 84°

Tags

CCSS.8.G.A.5

• F

• G

• H

• J

Tags

CCSS.7.G.B.5

How would you find the missing congruent angles?

• 180° - 80° = 100°

• 100° + 80° = 180°

• (180° - 80°) $\div$ 2 = 50°

• (180° - 80°) $\times$ 2 = 200°

Tags

CCSS.8.G.A.5

What is the value of each missing contruent angle?

• 40°

• 50°

• 60°

• 70°

Tags

CCSS.8.G.A.5

What is the value of each missing contruent angle?

• 40°

• 50°

• 60°

• 70°

Tags

CCSS.8.G.A.5

Which set of angles would NOT make a triangle (not 180°)? 

• 30°, 70° and 80° = ?

• 40°, 30° and 110° = ?

• 80°, 20° and 60 ° = ?

• 50°, 60 and 70° = ?

Tags

CCSS.8.G.A.5