Geo HW 1-5 Angle Relationships

Front

What is the name of the angle marked \( \angle 5 \)?

Back

The correct name is \( \angle IVJ \).

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are congruent.

Front

Identify pairs of vertical angles from the following: \( \angle COB \) & \( \angle COA \), \( \angle AOD \) & \( \angle AOC \), \( \angle COB \) & \( \angle AOD \), \( \angle BOD \) & \( \angle AOD \).

Back

The pairs of vertical angles are \( \angle COB \) & \( \angle AOD \).

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to \( 90^{\circ} \).

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to \( 180^{\circ} \).

Front

What does it mean for angles to be congruent?

Back

Congruent angles are angles that have the same measure.

Front

What does it mean for angles to be adjacent?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

Name two points collinear to Point K: H & M, J & L, N & J, M & L.

Back

The points collinear to Point K are J & L.

Front

If two angles are complementary, what is their sum?

Back

The sum of two complementary angles is \( 90^{\circ} \).

Front

If two angles are supplementary, what is their sum?

Back

The sum of two supplementary angles is \( 180^{\circ} \).