Understanding Triangles

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

• Right triangle

• Equilateral triangle

• Acute triangle

• Obtuse triangle

In an equilateral triangle, what is the measure of each angle?

• 60 degrees

• 45 degrees

• 90 degrees

• 120 degrees

How many sides are equal in an isosceles triangle?

• None

• One

• Three

• Two

What is a characteristic of a scalene triangle?

• Two sides are equal

• One side is equal to the sum of the other two

• No sides are equal

• All sides are equal

Which of the following is a possible angle combination in a scalene triangle?

• Two right angles

• One right angle and two acute angles

• Three obtuse angles

• Two obtuse angles and one acute angle