Classifying Triangles by Sides

The video tutorial explains how to classify triangles based on their sides, using tick marks and numbers to identify equilateral, isosceles, and scalene triangles. It provides a step-by-step guide to determine the type of triangle by checking if all sides are equal, two sides are equal, or no sides are equal. Practical examples are given to reinforce the concepts, and the tutorial concludes with a summary of the classification process.

What defines an equilateral triangle?

• No sides of equal length

• Three sides of equal length

• Two sides of equal length

• Three sides of different lengths

Tags

CCSS.4.G.A.2

What type of triangle has two equal sides?

• Equilateral

• Scalene

• None of the above

• Isosceles

Tags

CCSS.4.G.A.2

Which triangle has no equal sides?

• Equilateral

• All of the above

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

How do we classify triangles by their sides?

• Using angles

• Using side lengths

• Using vertices

• Using colors

Tags

CCSS.4.G.A.2

What is the first step in classifying triangles by sides?

• Checking for right angles

• Checking for three equal sides

• Checking for no equal sides

• Checking for two equal sides

Tags

CCSS.4.G.A.2

A triangle with sides 2 yards, 2 yards, and 2 yards is classified as?

• Acute

• Scalene

• Isosceles

• Equilateral

Tags

CCSS.4.G.A.2

A triangle with sides 3 inches, 5 inches, and 7 inches is classified as?

• Equilateral

• Isosceles

• Scalene

• Obtuse

Tags

CCSS.4.G.A.2

What does a triangle with two sides marked with sticks indicate?

• Scalene

• Right

• Isosceles

• Equilateral

Tags

CCSS.4.G.A.2

If a triangle has three sides with different tick marks, it is classified as?

• Acute

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

Which classification system uses tick marks or sticks to indicate side length?

• Color coding

• Vertex labeling

• Side length comparison

• Angle measurement

Tags

CCSS.4.G.A.2