Angle Relationships for Triangles

How many degrees do the measures of the angles of a triangle add up to?

• 0 degrees

• 45 degrees

• 90 degrees

• 180 degrees

The measure of an exterior angle of a triangle and the sum of the measure of the two remote interior angles are

​ ​ ​ ​ (a)  

• Different
• The Same

Which angles represent the interior angles?

• Angles W, X, Y

• Angles X, Y, Z

• Angles W, Y, Z

• Angles W, X, Z

Which angle represents the exterior angle?

• Angle W

• Angle X

• Angle Y

• Angle Z

Which angles are the remote interior angles?

• Angle W and Angle Z

• Angle X and Angle Z

• Angle X and Angle Y

• Angle Y and Angle Z

Find the value of x.

Enter a number only.

Please use a 0 if you need to write a one or two digit number.

For example, 007 would be 7 or 020 would be 20.

Find the measure of angle a.

• 56 degrees

• 73 degrees

• 158 degrees

In a triangle, Angle 1 measures 85° and Angle 2 measures 16°.

Find the measure of the unknown angle.

Enter a number only.

Please use a 0 if you need to write a one digit number.

For example, 07 would be 7.

Find the measure of angle y.

Enter a number only.

Please use a 0 if you need to write a one digit number.

For example, 07 would be 7.

Which would be the correct equation to find the value of x?

• x + 15 + 25 = 3x - 10

• 25 + 3x - 10 = x + 15

• 3x - 10 + x + 15 = 25