Angles Infor & Angle Addition Postulate

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point S is in the interior of angle ∠TRQ, then m∠TRQ = m∠TRS + m∠SRQ.

Front

If m∠TRS = (4x)° and m∠SRQ = (7x)°, what is the equation to find x if m∠TRQ = 88°?

Back

4x + 7x = 88°.

Front

What is the value of x if m∠TRS = (4x)° and m∠SRQ = (7x)° and m∠TRQ = 88°?

Back

x = 8.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What are rays in geometry?

Back

Rays are parts of a line that start at a point and extend infinitely in one direction.

Front

What is the common point where two rays meet called?

Back

The common point where two rays meet is called the endpoint.

Front

If m∠QST = 135°, what is the value of x if x + 135° = 180°?

Back

x = 45°.