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

What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?

Back

58

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

Back

60 degrees

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

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

Find the measure of the missing angle. Options: 135^o, 35^o, 45^o, 30^o

Back

45^o