Interior Exterior Angles

Find the unknown angle measure in the triangle.

• 40

• 68

• 72

• 112

For the figure shown, find the m<1.

• 119 degrees

• 57 degrees

• 61 degrees

• 62 degrees

Find the m<1 in the triangle shown.

• 63 degrees

• 55 degrees

• 58 degrees

• 50 degrees

Find the value of x in the triangle.

• 30 degrees

• 37 degrees

• 42 degrees

• 35 degrees

In the figure, m∠1= (5x+11)°, m∠2=(3x+22)°, and m∠3=(9x+28)°. What is the m<1?

• 5 degrees

• 36 degrees

• 37 degrees

• 73 degrees

Given that m∠A=(16x)°, m<C=(8x+20)°, and m∠D=128°, what is m∠B?

• 36 degrees

• 40 degrees

• 35 degrees

• 32 degrees

In the diagram, the m<2 is 52 degrees and the m<3 is 39 degrees. What is the m<4?

• 90 degrees

• 89 degrees

• 180 degrees

• 110 degrees

What is the sum of the measures of the exterior angles of a nonagon?

What is the measure of each exterior angle of a regular 20-gon?

If the exterior angle of a regular polygon measures 9 degrees, how many sides does the polygon have?