Classifying Triangle

Identify the triangle by its sides and angles

• Equilateral

• Obtuse Equilateral

• Acute Equilateral

• Acute Isosceles

Identify the triangle by its sides and angles

• Obtuse

• Acute Isosceles

• Obtuse Scalene

• Obtuse Isosceles

What is the name of this kind of triangle?

• Isosceles

• Scalene

• Equilateral

Identify this triangle by its sides

• Right

• Scalene

• Isosceles

• Equilateral

Identify all the correct terms to describe the triangle shown.

• Obtuse

• Equilateral

• Isosceles

• Right

• Acute

Why is the triangle classified as isosceles?

• All angles are acute

• At least two sides are congruent

• At least one angle is acute

• All angles are congruent

• equilateral acute

• isosceles right

• scalene acute

LOOKING AT ANGLES: WHAT TYPE OF TRIANGLE IS THIS? HINT: ONE ANGLE = 90 DEGREES

• ACUTE

• OBTUSE

• RIGHT

This is a right triangle because —

• it is facing the right way

• it has 3 acute angles

• it has one 90 degree angle

• it does not have one obtuse angle

Which statement is true about group A?

• The triangles are all equilateral.

• The triangles are all acute triangles.

• The triangles are all scalene.

• The triangles are all obtuse triangles.