Classify Triangles

What words can be used to classify a triangle by its SIDES?

• right

• isosceles

• acute

• equilateral

• scalene

Tags

5.5

What words can be used to classify a triangle by its ANGLES?

• isosceles

• acute

• right

• equilateral

• obtuse

Tags

5.5

• isosceles

• equilateral

• scalene

• right

Tags

5.5

Triangles can be classified based by the ​ (a)   of the sides or by the ​ (b)   of the angles.

• length

• measurements

• area

• volume

• dimensions

Tags

5.5

Identify all the correct terms to describe the triangle shown.

• Obtuse

• Equilateral

• Isosceles

• Right

• Acute

Tags

CCSS.4.G.A.2

Sofia drew this triangle. Classify it TWO ways.

• right

• isosceles

• acute

• scalene

Tags

CCSS.4.G.A.2

Which words best describe this triangle?

• Right

• Acute

• Obtuse

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

Why is a Triangle called Scalene?

• It has two sides that match

• It has three sides that match

• It has no sides that match

• It has four sides that match

Tags

CCSS.4.G.A.2

This Venn diagram shows the relationship between some types of triangles.

Which triangle belongs in the intersection of “Acute triangles” and “Isosceles triangles”?

(Hint: Use a dictionary to look up what acute and isosceles means if you do not know.)

• 
• 
• 
• 

Tags

CCSS.4.G.A.2

Classify the following Triangle

• Right Isosceles Triangle

• Acute Isosceles Triangle

• Right  Scalene Triangle

• Acute Scalene Triangle

Tags

CCSS.4.G.A.2