Transcript Document

Mathematics
Types of Triangles
By: Jenny Ordonez
There are two ways to classify
triangles
1. One way to classify triangles is by
looking at the length of their sides.
If all the sides of the triangle equal the
same length it’s a equilateral triangle.
Here is an example of a
equilateral triangle
Classifying triangles by the length of
their sides.
If only two sides are of the same
length then you have a isosceles
triangle.
Here is an example of a isosceles
triangle.
Notice how both sides
labeled “c” are the
same length.
Classifying triangles by the length
of their sides
If all the sides of the triangle have
different lengths then you have a scalene
triangle.
This is a example of a scalene triangle
Notice how all the sides of
the triangle have different
sides.
Classifying Triangles by
their angles
If a triangle has a angle that measures 90
degrees then it’s a right triangle.
Here is an
example of a
right triangle
Classifying Triangles by
their Angles
If you have a triangle that has one
obtuse angle or a angle that measures
more than 90 degrees then you have
an obtuse triangle.
Here is an example of a obtuse triangle
Math Link
Classifying Triangles by
their Angles
If all the angles of a triangle are less
than 90 degrees then the triangle is
an acute triangle.
Here is an example of a
Acute triangle
Review
There are two ways to classify
triangles
You can classify them by the length
of their sides
You can classify them by their angles