Math 7A Classifying Triangles

Classify this triangle by the sides lengths.

• Right

• Isosceles

• Scalene

• Equilateral

Classify this triangle by the sides lengths.

• Right

• Scalene

• Isosceles

• Equilateral

Classify this triangle by the sides lengths.

• Right

• Scalene

• Isosceles

• Equilateral

How many acute angles must an acute triangle have?

• 2

• 1

• 4

• 3

A triangle has side lengths of 19 cm, 19 cm, and 20 cm. Classify this triangle by the sides lengths.

• Equilateral

• Isosceles

• Scalene

Which of the following is NOT a term to classify triangles by their angles?

• Acute

• Equilateral

• Obtuse

• Right

What is the correct term to classify a triangle by its angles if the triangle has one angle that measures 90 degrees?

• Scalene

• Acute

• Obtuse

• Right

A triangle can be classified as an isosceles triangle if there are two congruent (equal) sides.

• True

• False

Which term is is used to classify a triangle by its angles if all three angles have a measure that is less than 90 degrees?

• Scalene

• Equilateral

• Acute

• Right

What does the term scalene mean?

• All of the sides are congruent (equal).

• Two of the sides are congruent (equal).

• The triangle has a 90 degree angle.

• None of the sides are congruent (equal).