Angles, Triangles and Polygons

Front

What is the sum of all angles in a triangle?

Back

180°

Front

What type of angle pair are Angle 6 and Angle 7 if they are opposite each other and formed by two intersecting lines?

Back

Vertical angles

Front

Define Alternate Exterior Angles.

Back

Angles that are on opposite sides of a transversal and outside the two lines.

Front

What is the Triangle Sum Theorem?

Back

The theorem states that the sum of the interior angles of a triangle is always 180°.

Front

If one angle of a triangle measures 60°, what is the sum of the measures of the other two angles?

Back

120°

Front

What are Corresponding Angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

Find the measure of angle b if angle a is 120° and they are supplementary angles.

Back

60°

Front

What is the definition of Alternate Interior Angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines.

Front

If two angles are complementary and one angle measures 30°, what is the measure of the other angle?

Back

60°

Front

What is the relationship between the angles in a polygon?

Back

The sum of the interior angles of a polygon with n sides is (n-2) × 180°.