The video tutorial explains how to classify triangles based on side congruence using tick marks. It covers the concept of congruent sides and describes the three types of triangles: equilateral, isosceles, and scalene. The tutorial concludes by identifying a scalene triangle as an example.

What do tick marks on a triangle's sides indicate?

• The type of triangle

• The length of the sides

• The color of the triangle

• Congruency of the sides

Which type of triangle has all sides of equal length?

• Equilateral

• Scalene

• Isosceles

• Right

In an isosceles triangle, how many sides are equal?

• None

• One

• Two

• Three

What is the defining characteristic of a scalene triangle?

• All sides are equal

• Two sides are equal

• No sides are equal

• It has a right angle

Which type of triangle is shown in the example?

• Scalene

• Isosceles

• Equilateral

• Right