1. CLASSIFICATIONS, ANGLES AND MORE!!
TRIANGLES
CLASSIFICATIONS, ANGLES AND MORE!!

2. Problem of the Day 60 How much is the missing angle? 110
HWWhat is the name of this triangle? 60
How much is the missing angle?
110

3. Different Types of Triangles
There are several different types of triangles.
You can classify a triangle by its SIDES or its ANGLES.

4. Classifying Triangles by Their Sides
EQUILATERAL – 3 congruent sides
ISOSCELES – at least two sides
congruent
SCALENE – no sides congruent
(all the sides are
different lengths)
EQUILATERAL
ISOSCELES
SCALENE

5. Classifying Triangles by Their Angles
EQUIANGULAR – all angles are congruent
ACUTE – all angles are acute
RIGHT – one right angle
OBTUSE – one obtuse angle
EQUIANGULAR
ACUTE
RIGHT
OBTUSE

6. Can You Classify the Different Triangles in the following slides?

12. Now look at these triangles in real life!

22. CLASSWORK: Identify the Type for Each Triangle Worksheet
HOMEWORK: Textbook pages 632 & 633
Be sure to read pages 630 & 631 to review
how to do the problems