Classifying Triangles and Figures

A triangle with one 90 degree angle and two sides of equal length

• isosceles right triangle

• isosceles obtuse triangle

• equilateral acute triangle

• scalene right

  triangle

a triangle with one angle over 90 degrees and no sides of equal length

• scalene obtuse triangle

• equilateral acute triangle

• scalene right triangle

• isosceles obtuse

  triangle

Which figures belong in the part of the organizer labeled “Isosceles triangles”?

• Figures II and V only

• Figures I, III, and V only

• Figures I and III only

• Figures II, IV, and V only

A triangle with all angles less than 90 degrees and all sides of equal length

• equilateral acute

  triangle

• isosceles right

  triangle

• equilateral obtuse

  triangle

• scalene acute

  triangle

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

What is the name of this kind of triangle?

• Isosceles

• Scalene

• Equilateral

equilateral acute

isosceles right

scalene acute

• equilateral acute

• isosceles right

• scalene acute

Classify the following Triangle

• Right Isosceles Triangle

• Acute Isosceles Triangle

• Right  Scalene Triangle

• Acute Scalene Triangle

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.