Complementary Supplementary Vertical Angles

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

Vertical angles are always:

Back

congruent (equal measures).

Front

What are vertical angles?

Back

Angles that are across the vertex from when lines intersect.

Front

Find the missing angle. Find x: 160° + x = 180°

Back

x = 20°.

Front

The point where 2 lines intersect is called the ______________.

Back

vertex.

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal.

Front

What is the relationship between adjacent angles formed by intersecting lines?

Back

They are supplementary.

Front

If one angle measures 70°, what is the measure of its supplementary angle?

Back

110°.