Types and Classifications of Triangles

The video tutorial explains how to classify triangles based on their side lengths. It covers three types of triangles: scalene, where all sides are different; isosceles, with two sides equal; and equilateral, where all sides are equal. The tutorial includes examples and practice problems to reinforce the concepts.

What is one way to classify triangles other than by side lengths?

• By the color of the triangle

• By the angles of the triangle

• By the perimeter of the triangle

• By the area of the triangle

Which type of triangle has all sides of different lengths?

• Equilateral

• Scalene

• Isosceles

• Right

If a triangle has sides of lengths 3, 4, and 5, what type of triangle is it?

• Equilateral

• Isosceles

• Scalene

• Right

What defines an isosceles triangle?

• Two sides are equal

• All angles are equal

• All sides are equal

• No sides are equal

Which of the following is an example of an isosceles triangle?

• Sides of 5, 6, and 7

• Sides of 2, 3, and 4

• Sides of 4, 4, and 4

• Sides of 3, 3, and 5

What is the characteristic of an equilateral triangle?

• Two sides are equal

• All sides are different

• One side is longer

• All sides are equal

If a triangle has sides of 5, 5, and 5, what type of triangle is it?

• Right

• Scalene

• Isosceles

• Equilateral

What is the best classification for a triangle with sides 3, 2, and 3?

• Scalene

• Isosceles

• Equilateral

• Right

Which type of triangle has two sides of equal length and one side of a different length?

• Equilateral

• Isosceles

• Scalene

• Right

What is the best classification for a triangle with sides 3, 6, and 4?

• Isosceles

• Equilateral

• Scalene

• Right