Classify Triangles

Any triangle that contains one angle that measures exactly 90 degrees is a _________ triangle.

• Acute

• Obtuse

• Right

• Scalene

What is the term for the longest side of a right triangle?

• Base

• Altitude

• Hypotenuse

• Leg

What is a triangle with all sides of different lengths called?

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

• Right triangle

If a triangle has two equal angles, what type of triangle is it?

• Equilateral triangle

• Scalene triangle

• Isosceles triangle

• Right triangle

What is a triangle that has one obtuse (greater than 90 degrees) angle?

• Acute triangle

• Right triangle

• Obtuse triangle

• Equilateral triangle

What is the name of a triangle with one angle measuring exactly 90 degrees?

• Acute triangle

• Obtuse triangle

• Right triangle

• Equilateral triangle

Which of these triangles is made up of 3 angles that each measure less than 90 degrees?

• Acute triangle

• Obtuse triangle

• Right triangle

• Scalene triangle

What type of triangle has all sides of equal length?

• Isosceles triangle

• Scalene triangle

• Equilateral triangle

• Right triangle

What is a triangle that has one right (90 degree) angle?

• Right triangle

• Acute triangle

• Obtuse triangle

• Equilateral triangle

In a right triangle, what is the relationship between the lengths of the sides?

• The square of the hypotenuse is equal to the sum of the squares of the other two sides (Pythagorean theorem).

• The sum of the lengths of the two shorter sides is equal to the length of the hypotenuse.

• The length of the hypotenuse is always greater than the length of either of the other two sides.

• The product of the lengths of the two shorter sides is equal to the length of the hypotenuse.