Classifying Triangles

How many acute angles must an acute triangle have?

• 2
• 1
• 4
• 3

When classifying a triangle by its angles, what type of triangle has one right angle? 

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

• Isosceles
• Equilateral
• Right
• Right Isosceles

Classify by angle

• Equilateral
• Right
• Acute
• Obtuse

Classify by its angles.

• acute
• equiangular
• right
• obtuse

Classify by its sides.

• scalene
• isosceles
• equilateral
• right

Which would be the best classification for the triangle shown?

• acute isosceles
• obtuse scalene
• obtuse isosceles
• acute scalene

All angles in a triangle must add up to?

• 360 degrees
• 90 degrees
• 180 degrees
• 270 degrees

Which would be the best classification for the triangle shown?

• acute isosceles
• equiangular scalene
• equiangular isosceles
• equiangular equilateral

Which would be the best classification for the triangle shown?

• right isosceles
• obtuse scalene
• obtuse isosceles
• right scalene