Geometry CP2 - Midterm Vocabulary

Front

A triangle with all acute angles

Back

Acute Triangle: A triangle where all three angles are less than 90 degrees.

Front

Several points that lie on the same line

Back

Collinear Points: Points that lie on the same straight line.

Front

A triangle that has one angle measuring greater than 90 degrees

Back

Obtuse Triangle: A triangle with one angle greater than 90 degrees.

Front

A pair of adjacent angles that are supplementary

Back

Linear Pair: Two adjacent angles whose sum is 180 degrees.

Front

One angle that measures 180 degrees

Back

Straight Angle: An angle that is exactly 180 degrees.

Front

A triangle with all sides of equal length

Back

Equilateral Triangle: A triangle where all three sides are of equal length.

Front

A triangle with one right angle

Back

Right Triangle: A triangle that has one angle measuring exactly 90 degrees.

Front

Angles that add up to 90 degrees

Back

Complementary Angles: Two angles whose sum is 90 degrees.

Front

Angles that are opposite each other when two lines cross

Back

Vertical Angles: Angles that are opposite each other when two lines intersect.

Front

A polygon with four sides

Back

Quadrilateral: A four-sided polygon.