Triangle Properties and Types

The video tutorial introduces triangles, focusing on their types based on side lengths: equilateral, isosceles, and scalene. An equilateral triangle has all sides and angles equal, an isosceles triangle has two equal sides and angles, and a scalene triangle has all sides and angles different. The tutorial uses examples to illustrate these concepts, helping students understand the properties and differences between these triangle types.

What is a characteristic of a triangle?

• It has four sides.

• It has five sides.

• It has three sides.

• It has two sides.

How many vertices does a triangle have?

• Five

• Three

• Four

• Two

What is an equilateral triangle?

• A triangle with one side equal

• A triangle with all sides equal

• A triangle with two sides equal

• A triangle with all sides different

In an equilateral triangle, how are the angles related?

• All angles are equal

• Two angles are equal

• All angles are different

• One angle is equal

What is another name for an equilateral triangle?

• Right triangle

• Equiangular triangle

• Scalene triangle

• Isosceles triangle

Which triangle has all sides and angles equal?

• Right

• Scalene

• Isosceles

• Equilateral

Which triangle is also known as equiangular?

• Equilateral

• Isosceles

• Right

• Scalene

What is the defining feature of an equilateral triangle?

• One side is equal

• All sides are equal

• Two sides are equal

• All sides are different

What defines an isosceles triangle?

• Two sides are equal

• All sides are equal

• No sides are equal

• All angles are equal

In an isosceles triangle, how are the angles related?

• One angle is equal

• All angles are equal

• Two angles are equal

• All angles are different