Classify Triangles

Front

What is an angle whose measure is exactly 90 degrees?

Back

Right angle

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What type of triangle has all angles less than 90 degrees?

Back

Acute triangle

Front

How many acute angles must an acute triangle have?

Back

3 acute angles

Front

What is an angle that measures less than 90 degrees?

Back

Acute angle

Front

What type of triangle has one angle that is exactly 90 degrees?

Back

Right triangle

Front

What type of triangle has all sides of different lengths?

Back

Scalene triangle

Front

What type of triangle has at least two sides of equal length?

Back

Isosceles triangle

Front

What is the sum of the angles in any triangle?

Back

180 degrees

Front

What type of triangle has all angles equal to 60 degrees?

Back

Equilateral triangle