Understanding Triangles

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

• Right triangle

• Obtuse triangle

• Scalene triangle

• Acute triangle

What is the name of a triangle with all sides of different lengths?

• Equilateral triangle

• Isosceles triangle

• Right triangle

• Scalene triangle

If a triangle has two sides of equal length, what is it called?

• Obtuse triangle

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

What type of triangle has one angle exactly equal to 90 degrees?

• Scalene triangle

• Right triangle

• Acute triangle

• Obtuse triangle

Which triangle has one angle greater than 90 degrees?

• Right triangle

• Acute triangle

• Obtuse triangle

• Equilateral triangle