Geometry Angles

Find the missing angle in a triangle with angles 60° and 70°.

• 50°

• 90°

• 80°

• 40°

Calculate the missing angle in a quadrilateral with angles 90°, 45°, and 60°.

• The missing angle is 180°.

• The missing angle is 120°.

• The missing angle is 165°.

• The missing angle is 75°.

Determine the measure of the missing angle in a parallelogram with angles 120° and 60°.

• 45

• 120

• 90

• 180

Find the unknown angle in a pentagon with angles 100°, 120°, 80°, and 110°.

• 150°

• 140°

• 90°

• 130°

Calculate the missing angle in a hexagon with angles 120°, 90°, 110°, and 140°.

• 150

• 260

• 180

• 230

Determine the measure of the unknown angle in a heptagon with angles 150°, 120°, 100°, and 80°.

• 300°

• 250°

• 450°

• 200°

Find the missing angle in an octagon with angles 135°, 120°, 150°, and 100°.

• 600

• 450

• 525

• 575

Calculate the unknown angle in a nonagon with angles 160°, 140°, 120°, and 110°.

• 900

• 800

• 650

• 730