Geometry Terms

Front

What angle has a measure between 90 and 180 degrees?

Back

Obtuse Angle

Front

If two points are collinear they ________ ?

Back

Lie on the same line

Front

What is the definition of Congruent?

Back

Having the same size, shape, and measure

Front

What do you call a flat surface that extends without end and has no thickness?

Back

Plane

Front

If two angles form a linear pair, they ________ ?

Back

they are both adjacent and supplementary

Front

What is the definition of an Acute Angle?

Back

An angle measuring less than 90˚

Front

What is a Right Angle?

Back

An angle measuring exactly 90˚

Front

What is a Straight Angle?

Back

An angle measuring exactly 180˚

Front

What do you call a pair of angles that are opposite each other when two lines intersect?

Back

Vertical Angles

Front

What is the definition of Parallel Lines?

Back

Lines in a plane that never meet and are always the same distance apart