Angles and Triangles Vocabulary Test Review

An angle that measures less than 90 degrees

• Right Angle

• Complementary Angle

• Acute Angle

• Obtuse Angle

Two angles that SHARE a common SIDE and a common VERTEX (or point); If the two angles form a straight line, they are supplementary and have a sum of 180 degrees.

• Adjacent Angle

• Complementary Angle

• Acute Angle

• Vertical Angle

A pair of angles that have the sum of 90 degrees.

• Adjacent Angle

• Complementary Angle

• Acute Angle

• Supplementary Angle

An angle that measures between 90 degrees and 180 degrees.

• Adjacent Angle

• Right Angle

• Acute Angle

• Obtuse Angle

An angle that measures exactly 90 degrees.

• Obtuse Angle

• Straight Angle

• Acute Angle

• Right Angle

An angle that measures exactly 180 degrees.

• Obtuse Angle

• Straight Angle

• Acute Angle

• Right Angle

A pair of angles that have the sum of 180 degrees.

• Obtuse Angle

• Supplementary Angle

• Complementary Angle

• Right Angle

A pair of OPPOSITE angles formed by intersecting lines; the angles are CONGRUENT (equal to each other)

• Vertical Angle

• Supplementary Angle

• Complementary Angle

• Adjacent Angle

A triangle which ALL the side lengths and angle measures are the SAME.

• Isosceles Triangle

• Scalene Triangle

• Equilateral Triangle

• None of the above

A triangle which TWO of the side lengths and two angle measures are the same.

• Isosceles Triangle

• Scalene Triangle

• Equilateral Triangle

• None of the above