How to label triangles depending on the length of their sides

The video tutorial discusses the classification of triangles based on the equality of their sides. It introduces three types of triangles: equilateral, where all sides are equal; isosceles, where two sides are equal; and scalene, where no sides are equal. The teacher explains how to identify these triangles using tick marks to denote equal sides and concludes with a review, preparing students for a test on the material.

What is a triangle called when all its sides are of equal length?

• Scalene

• Isosceles

• Equilateral

• Right

How do we identify an isosceles triangle?

• All sides are different

• Two sides are equal

• All angles are 90 degrees

• It has no equal sides

Which type of triangle uses tick marks to show equal sides?

• Scalene

• Equilateral

• Right

• Isosceles

What is the term for a triangle with no equal sides?

• Equilateral

• Isosceles

• Scalene

• Right

In a scalene triangle, how many sides are equal?

• Two

• One

• None

• Three