Geometry - Angles

Created by pnergy33

Acute Angle

An angle less than 90 degrees

Obtuse Angle

An angle between 90 and 180 degrees

Right Angle

An angle that is exactly 90 degrees

Straight Angle

An angle that is exactly 180 degrees

Reflex Angle

An angle between 180 and 360 degrees

Revolution Angle

An angle that is exactly 360 degrees

...

Line Segment

Has two end points

Ray

Has one end point and continues forever in other direction

Line

A straight line having at least two points that continue forever

Corresponding Angles

Same side of transversal and same size

opposite angles

These angles are formed by two intersecting lines and have the same measure.

alternate interior angles

angles are on opposite sides of the transversal and on the inside of the given lines

alternate exterior angles

outside the two parallel lines and opposite sides of transversal

Supplementary Angles

Two angles with a sum of 180 degrees

Complementary Angles

Two angles with a sum of 90 degrees

transversal

A line that intersects two or more lines.