Geometry Concepts: Intersecting Lines

Front

A pair of non-adjacent angles formed by intersecting lines.

Back

Vertical Angles

Front

A whole is equal to the sum of its parts

Back

Partition Postulate

Front

Adjacent angles that form linear pairs are supplementary (add up to 180)

Back

Linear pairs are supplementary

Front

angles formed by the angles is a line, the sum of all of the angles measures is 180

Back

Consecutive adjacent angles

Front

formed by three or more rays with the same vertex and whose interiors do not overlap is 360

Back

Angles at a point

Front

The sum of the 3 angle measures of any triangle is 180

Back

triangle angle sum

Front

When one angle of a triangle is a right angle, the sum of the measures of the other two angles is 90

Back

Acute angles of a right triangle

Front

The sum of the measures of two angles of a triangle equals the measure of the opposite exterior angle

Back

Exterior angle theorem

Front

The base angles of an isosceles triangle are equal in measure

Back

Isosceles triangle theorem

Front

If all sides of a triangle are the same, all angles are also the same

Back

Equilateral triangle