Classify triangles

Word Cloud

How many sides does a triangle have?

Multiple Choice

What kind of triangle is this?

• Acute

• Right

• Obtuse

Draw

Try to draw an obtuse triangle

Categorize a triangle

Word Cloud

What can you use to tell triangles apart?

angles or sides or both

​Look at the triangle you have

• Measure the sides and the angels of each triangle

• Draw the triangles in your journal

• Discuss with your group about the similarities and the differences between each triangle

This is a triangle that has three equal sides and three equal angles

​

​Equilateral triangle

​Two sides are the same length

​Isosceles triangle

NO sides are equal

​

​Scalene triangle

Ways to classify?

Angle
is all the angles under 90 degrees = Acute
is one angle 90 degrees = Right
is one angle over 90 degrees = Obtuse

​Sides
are the sides all the same length = equilateral
are only two side the same length = isosceles
none of the sides are equal = scalene

Categorize

Options (4)

Place the images in the correct label

Obtuse triangle

Acute triangle

Right triangle

Square

Hotspot

Select the triangle that is an equilateral