Types of triangles by sides and angles

Triangles can be classified by sides and angles

In this video, I will discuss different types of triangles
A triangle is a 3 sided plane figure with three sides and three angles

In this video I will go over the properties of the most common triangles you will encounter in Geometry class

Up first are triangles that are classified by the length of their sides

Scalene triangle

Three different side lengths

Three different angle measures

Isosceles triangle

At least two congruent sides

At least two congruent angles

Equilateral triangle

Three congruent sides

Three congruent angles The angle measure equals 60 degrees

Triangles can also be classified by their angles.

There are three angles often associated with triangles
Acute angles are less than 90 degrees
Right angles are exactly 90 degrees
Obtuse are greater than 90 degrees

Types of Triangles

All triangles have two acute angles and the third angle determines the type of
Triangle you have.

Acute triangle

Triangle with three angles that measure less than 90 degrees

Obtuse triangle

Triangle with one angle greater than 90 degrees

Right triangle

Triangle with one right angle ( 90 degrees)

The other two angles are complementary

There you go types of triangles based on side lengths and angles measures

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