Unit 4 Flashcard: Classifying Triangles

Front

What type of triangle has all angles less than 90° and two equal sides?

Back

Acute Isosceles

Front

What type of triangle has one angle greater than 90° and no equal sides?

Back

Obtuse Scalene

Front

In an ___________ triangle, one angle is greater than 90 degrees.

Back

obtuse

Front

What type of triangle has one angle equal to 90°?

Back

Right Triangle

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees

Front

What type of triangle has all sides of different lengths?

Back

Scalene Triangle

Front

What type of triangle has at least two equal sides?

Back

Isosceles Triangle

Front

What is the definition of an acute triangle?

Back

A triangle where all angles are less than 90°.

Front

What is the definition of an obtuse triangle?

Back

A triangle where one angle is greater than 90°.

Front

What is the definition of a right triangle?

Back

A triangle where one angle is exactly 90°.