Categorizing Triangles by Angles

What type of triangle has all sides of different lengths?

• Isosceles

• Equilateral

• Scalene

• Right

If a triangle has two sides of equal length, it is classified as?

• Isosceles

• Acute

• Equilateral

• Scalene

A triangle with one angle of 90 degrees is known as?

• Equilateral

• Obtuse

• Acute

• Right

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

• 90 degrees

• 180 degrees

• 360 degrees

• 270 degrees

If a triangle has angles of 40 and 50 degrees, what is the third angle?

• 70 degrees

• 80 degrees

• 100 degrees

• 90 degrees

If two angles of a triangle are 70 degrees each, the third angle must be?

• 20 degrees

• 30 degrees

• 70 degrees

• 40 degrees

In which triangle are the lengths of sides opposite to equal angles also equal?

• Scalene

• Acute

• Equilateral

• Isosceles

Which statement is true for an isosceles triangle?

• All sides are equal

• Exactly two sides are equal

• All sides are unequal

• No sides are equal

Which triangle has all three interior angles equal?

• Scalene

• Isosceles

• Equilateral

• Right

What type of triangle is formed if all angles are 60 degrees?

• Isosceles

• Obtuse

• Right

• Equilateral