Identify Angles and Lines in Geometry

Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is the opposite ray of Ray LM?

Back

Ray LP.

Front

How do we name an angle?

Back

An angle is named using three points, with the vertex point in the middle.

Front

What is the intersection of two lines?

Back

The intersection of two lines is the point where they meet.

Front

How many letters do we use to name a line?

Back

2 letters.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is the definition of an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.

Front

What is a vertical angle?

Back

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

Front

What is a complementary angle?

Back

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

Front

What is a supplementary angle?

Back

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