5.1 Quiz

What are the two ways to classify triangles?

• By the angles and number of sides

• By the angles and side lengths

• By the side lengths and the size of the triangle

What are the three ways to classify triangles by their SIDES?

• equilateral, right, isosceles

• scalene, obtuse, right

• equilateral, isosceles, scalene

What type of triangle is this?

• Equilateral

• Isosceles

• Scalene

What type of triangle is this?

• Scalene

• Isosceles

• Equilateral

Look at the triangle pictured. 
What do the lines (sticks) mean on a shape?

• The lines (sticks) show sides that are equal
• The lines (sticks) show sides that are not equal

Name this triangle by the side length

• scalene

• isosceles

• equilateral

An obtuse triangle has (a)   obtuse angle(s).

• exactly one
• exactly two
• three

A right triangle has one angle that measures ​ (a)   .

Given: All the angles in an Equilateral Triangle are equal.

What is the measure of ∠S?

Mathematical Equivalence

ON

The triangle would be classified as a(n) ​ (a)   ​ (b)   .

• obtuse
• scalene
• acute
• right
• isosceles
• equilateral