Properties of Angles in Triangles and Quadrilaterals

What is the sum of the interior angles of a triangle?

• 180°

• 360°

• 90°

• 270°

If you add the interior angles of a quadrilateral, what will the sum be?

• 180°

• 270°

• 360°

• 450°

What is the sum of the interior angles of a quadrilateral?

• 180°

• 270°

• 360°

• 450°

What is the relationship between an exterior angle and its adjacent interior angle in a triangle?

• They are supplementary

• They are equal

• They are congruent

• They are complementary

In a quadrilateral, if one angle is supplementary to another, what is their combined measure?

• 90°

• 180°

• 360°

• 270°

Which of the following statements is true about supplementary angles?

• They add up to 90°

• They are always less than 90°

• They are always equal

• They add up to 180°

How can you find an exterior angle of a triangle if you know the two opposite interior angles?

• Multiply the interior angles by 2

• Add the two opposite interior angles

• Subtract the interior angles from 180°

• Divide the sum of the interior angles by 2

In a triangle, if one exterior angle is 120°, what is the sum of the two opposite interior angles?

• 90°

• 60°

• 120°

• 180°

What is the sum of the exterior angles of a triangle?

• 90°

• 270°

• 360°

• 180°

If you extend the sides of a quadrilateral, what will the sum of the exterior angles be?

• 180°

• 270°

• 360°

• 450°