Triangle vocabulary worksheet



Name _____________________                                        Date:_____________________


Using the word box below, write down the correct word next to each definition.

Equilateral
Equiangular
Legs
Isosceles 		Right triangle
Hypotenuse
Obtuse triangle
Acute 		Triangle
Base
Altitude
Scalene


A triangle with no congruent sides is called ___________________


For a triangle, a side opposite to a right angle is called ___________________


A triangle in which all the angles have the same measure is called___________________


A triangle with an interior angle that is equal to 90° is called ___________________


In a triangle, the line that starts from the vertex and is perpendicular to the side opposite that vertex is called ___________________


Two congruent sides of an isosceles triangle are called___________________


A triangle where each of the interior angles measures less than 90° ___________________


The noncongruent side of an isosceles triangle is called ___________________


A triangle in which all sides have the same length ___________________


A triangle with 2 congruent sides is called ___________________


A triangle with an interior angle that measures more than 90° is called ___________________


A polygon with 3 sides is called ___________________





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