Classifying Triangles

If a triangle has no equal length sides, it is a _____ triangle.

• Equilateral

• Obtuse

• Isosceles

• Scalene

What kind of triangle is this? Name it for its angles.

• acute

• obtuse

• right

Name these triangles for their angles.

• acute

• right

• obtuse

Which triangle is an equilateral triangle?

• 
• 
• 

A equilateral triangle is always an isosceles triangle.

• True

• False

Classify the triangle by angles and sides.

• Right Scalene
• Right Isosceles
• Acute Isosceles
• Right Obtuse

Classify the triangle by angles and sides.

• Obtuse Scalene
• Obtuse Isosceles
• Acute Isosceles
• Equiangular Scalene

Classify the triangle by angles and sides.

• Equiangular Equilateral
• Right Isosceles
• Right Scalene
• Acute Isosceles

How many acute angles must an acute triangle have?

• 2
• 1
• 4
• 3

A triangle has angle measurements of 54°, 52°, and 74°. What kind of triangle is it?

• acute triangle
• right triangle
• obtuse triangle
• none of the above