Classifying Triangles Sides and Angles

Find the measure of the missing angle in the triangle.

Find the measure of the missing angle in the triangle.

Classify the triangle by its sides. 

• Equilateral

• Scalene

• Isosceles

An acute triangle has 3 acute angles.

• True

• False

True or False.
A right, isosceles triangle has 1 right angle and 2 equal sides.

• True 

• False

Classify the triangle by its sides.

• Scalene

• Isosceles

• Equilateral

Classify the triangle by its angles.

• Acute Triangle

• Right Triangle

• Obtuse Triangle

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

True or False
An obtuse triangle has 1 obtuse angle.

• True

• False

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

• By the angles and the how many points