Triangle Sum Theorem

Front

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

Back

180°

Front

Find the measure of the angle indicated. Options: 139°, 66°, 138°, 116°

Back

66°

Front

Find the measure of the missing angle.

Back

50^o

Front

If all three angles are exactly the same measure, how big is each angle?
Hint:    x + x + x  = 180
Options: 180 degrees, 90 degrees, 50 degrees, 60 degrees

Back

60 degrees

Front

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

Back

80

Front

Find the measure of the indicated angle. Options: 26, 36, 85, 144

Back

36

Front

Find the measure of the missing angle. Options: 30^o, 110^o, 150^o, 40^o

Back

30^o

Front

Solve for x.

Back

-3

Front

Name the largest angle in this triangle: ∠D, ∠E, ∠F

Back

∠E

Front

Name the smallest angle in this triangle. Options: ∠A, ∠B, ∠C

Back

∠B