Classifying Triangles

This triangle has 3 acute angles.

• Obtuse Triangle

• Acute Triangle

• Right Triangle

This triangle has 1 obtuse angles and 2 acute angles.

• Acute Triangle

• Right Triangle

• Obtuse Triangle

This triangle has a right angle and two acute angles.

• Right Triangle

• Acute Triangle

• Obtuse Triangle

This triangle has 3 congruent sides.

• Isosceles Triangle

• Equilateral Triangle

• Scalene Triangle

This triangle has 2 congruent sides.

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

This triangle has no congruent sides.

• Scalene Triangle

• Equilateral Triangle

• Isosceles Triangle

Name this triangle by its sides and angles.

• Acute Isosceles

• Obtuse Scalene

• Acute Equilateral

• Right Equilateral

Name the triangle by its sides and angles.

• Right Isosceles

• Right Scalene

• Acute Scalene

• Obtuse Isosceles

Name the triangle by its angles.

• Right Triangle

• Acute Triangle

• Obtuse Triangle

Name the triangle by its sides.

• Scalene Triangle

• Equilateral Triangle

• Isosceles Triangle