Classifying Triangles

A scalene triangle has _____

• 3 different angle names

• no congruent sides

• all sides congruent

• 3 congruent angles

A triangle with at least one angle greater than 90 degrees is called a(n) ________ triangle

• obtuse

• left

• right

• acute

How many acute angles must an acute triangle have?

• 2

• 1

• 4

• 3

Classify the triangle by angles and sides.

• Right Scalene

• Right Isosceles

• Acute Isosceles

• Right Obtuse

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle

• Scalene Triangle

• Isosceles Triangle

• Right Triangle

• Equilateral
• Isosceles
• Scalene
• Right

What kind of triangle is this?

• Acute

• Super

• Right

• Obtuse

A triangle has angle measurements of 26°, 59°, and 95°. What kind of triangle is it?

• acute triangle

• right triangle

• obtuse triangle

• none of the above

A triangle has angle measurements of 54°, 52°, and 74°. What kind of triangle is it?

• acute triangle

• right triangle

• obtuse triangle

• none of the above