Classify Triangles

Multiple Choice

What type of triangle has three equal sides?

• equilateral triangle

• isosceles triangle

• scalene triangle

Multiple Choice

What type of triangle has two equal sides?

• equilateral triangle

• scalene triangle

• isosceles triangle

Multiple Choice

What type of triangle doesn't have any equal sides?

• isosceles triangle

• equilateral triangle

• scalene triangle

Multiple Choice

What type of triangle has one right angle?

• right triangle

• acute triangle

• obtuse triangle

Multiple Choice

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

• obtuse triangle

• right triangle

• acute triangle

Multiple Choice

What type of triangle has one angle more than 90 degrees?

• obtuse triangle

• right triangle

• acute triangle

Draw

Draw a right triangle. Prove how you know it's a right triangle.

Multiple Choice

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

• 90 degrees

• 180 degrees

• 270 degrees