Front

Acute Triangle: Less than 90 degrees, all 3 angles are acute, One right angle

Back

An acute triangle has all angles less than 90 degrees.

Front

Right Triangle

Back

One right angle

Front

Obtuse Triangle

Back

One obtuse triangle, greater than 90 degrees

Front

Equilateral Triangle

Back

All three sides are equal

Front

Isosceles Triangle

Back

Two sides are equal

Front

Scalene Triangle

Back

No sides are equal

Front

All three sides are equal

Back

Equilateral triangle

Front

One right angle

Back

Right triangle

Front

All three angles are acute and is less than 90 degrees.

Back

Acute triangle

Front

No sides are equal. Options: Isosceles triangle, Scalene triangle

Back

Scalene triangle