Angle Addition Postulate+

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC. In formula terms: m∠AOB + m∠BOC = m∠AOC.

Front

Define an angle.

Back

An angle is formed by two rays (sides of the angle) that share a common endpoint (the vertex).

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 vertex of an angle?

Back

The vertex of an angle is the point where the two rays meet.

Front

What is the difference between acute, obtuse, and right angles?

Back

An acute angle measures less than 90 degrees, a right angle measures exactly 90 degrees, and an obtuse angle measures more than 90 degrees but less than 180 degrees.

Front

How do you find the measure of an angle using the Angle Addition Postulate?

Back

To find the measure of an angle using the Angle Addition Postulate, identify the two smaller angles that make up the larger angle, then add their measures together.

Front

What is a defined term in geometry?

Back

A defined term is a term that can be described using other known terms, such as 'angle' being defined as the figure formed by two rays with a common endpoint.

Front

What is the measure of a straight angle?

Back

The measure of a straight angle is 180 degrees.

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.