4.1 Classifying Triangles

Look at the sides of this triangle. What type of triangle is this?

• Equilateral
• Isosceles
• Scalene
• Obtuse

Tags

CCSS.4.G.A.2

Look at the sides of this triangle. What type of triangle is this?

• scalene
• acute
• equilateral
• isosceles

Tags

CCSS.4.G.A.2

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle
• Right Isosceles Triangle
• Obtuse Scalene Triangle
• Obtuse Equilateral Triangle

Tags

CCSS.4.G.A.2

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle
• Scalene Triangle
• Isosceles Triangle
• Right Triangle

Tags

CCSS.4.G.A.2

What kind of angle does this triangle have

• Right

• Obtuse

• Acute

Tags

CCSS.4.G.A.2

An isosceles triangle has how many congruent sides?

• 1

• 2

• 3

Tags

CCSS.2.G.A.1

An acute triangle is a triangle in which ______ angles are acute angles (less than 90 degrees)

• 1

• 2

• 3

Tags

CCSS.4.G.A.2

An obtuse triangle has at least one angle that is bigger than ______ degrees.

• 90

• 45

• 180

Tags

CCSS.4.G.A.2

Which of the following is NOT a term to classify triangles by their angles?

• acute

• equilateral

• obtuse

• right

Tags

CCSS.4.G.A.2

A triangle has side lengths of 19 centimetres, 19 centimetres, and 20 centimetres. Is this triangle equilateral?

• equilateral triangle
• isosceles triangle  
• scalene triangle
• none of the above

Tags

CCSS.4.G.A.2