Unit 4 Flashcard: Classifying Triangles

Front

In an ______________ triangle, all three angles are less than 90 degrees.

Back

acute

Front

What kind of triangle is this? (If one angle is exactly 90 degrees)

Back

right

Front

A triangle has angle measurements of 74°, 90°, and 16°. What kind of triangle is it?

Back

right triangle

Front

Classify the triangle by angles and sides: Obtuse Scalene, Obtuse Isosceles, Acute Isosceles, Equiangular Scalene.

Back

Obtuse Isosceles

Front

Find the value of x in the triangle where one angle is 41 degrees.

Back

41

Front

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

Back

180 degrees

Front

Define an obtuse triangle.

Back

A triangle with one angle greater than 90 degrees.

Front

Define a scalene triangle.

Back

A triangle with all sides of different lengths.

Front

Define an isosceles triangle.

Back

A triangle with at least two sides of equal length.

Front

What is an equilateral triangle?

Back

A triangle with all three sides and angles equal.