Unit 2 Formative 1 (Angles)

Front

What is the definition of adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex, but do not overlap.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What does it mean to bisect an angle?

Back

To bisect an angle means to divide it into two equal parts.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the relationship between exterior angles and interior angles in a triangle?

Back

An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Front

What are the properties of parallel lines cut by a transversal?

Back

When parallel lines are cut by a transversal, several angle relationships are formed, including corresponding angles, alternate interior angles, and consecutive interior angles.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position at each intersection where a straight line crosses two others.

Front

What are alternate interior angles?

Back

Alternate interior angles are angles that are on opposite sides of the transversal and inside the two lines.