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Angles and Triangles

The vocabulary used to classify angles and triangles.

QuestionAnswer
Acute Angle An angle whose measure is between 0 and 90 degrees.
Right Angle An angle whose measure is 90 degrees.
Obtuse Angle An angle whose measure is between 90 and 180 degrees.
Straight Angle An angle whose measure is 180 degrees.
Equilateral Triangle A triangle with all three sides of equal measure.
Isosceles Triangle A triangle with at least two sides of equal measure.
Scalene Trianlge A triangle with no sides of equal measure.
Acute Triangle A triangle with three acute angles.
Right Triangle A triangle with an angle measuring 90 degrees.
Obtuse Triangle A triangle with an obtuse angle.
Supplementary Angles Two angles with a common vertex and side whose measures add up to 180 degrees.
Complementary Angles Two angles with a common vertex and side whose measures add up to 90 degrees.
Vertical Angles Angles that are created by two intersecting lines in which opposite angles are congruent.
Created by: amills501