Classify Triangle

What words can be used to classify a triangle by its SIDES?

• right

• isosceles

• acute

• equilateral

• scalene

Tags

5.5

What words can be used to classify a triangle by its ANGLES?

• isosceles

• acute

• right

• equilateral

• obtuse

Tags

5.5

Triangles can be classified based by the ​ (a)   of the sides or by the ​ (b)   of the angles.

• length

• measurements

• area

• volume

• dimensions

Tags

5.5

Equilateral triangles can also be classified as isosceles triangles because...

• they can be classified as anything.

• they have all acute angles

• they are not scalene triangles.

• they have at least 2 congruent sides

Tags

5.5

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

• ACUTE

• OBTUSE

• RIGHT

Tags

CCSS.4.G.A.2

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

Tags

CCSS.2.G.A.1

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

Tags

CCSS.4.G.A.2

Identify all the correct terms to describe the triangle shown.

• Obtuse

• Equilateral

• Isosceles

• Right

• Acute

Tags

CCSS.4.G.A.2

Leah drew a triangle on a piece of paper. She made one side 5 inches long, another side 4 inches long, and the final side 3 inches long. What kind of triangle did she create?

• Equilateral

• Scalene

• Straight

• Isosceles

Tags

CCSS.4.G.A.2

Which words best describe this triangle?

• Right

• Acute

• Obtuse

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2