Kinds of Triangles

Kinds of Triangles

The student will learn to recognize and classify different kinds of triangles.

Triangles can be classified by Angles.

The interior angles always adds up to $180\degree$  

Acute Triangle

It has three angles     < $90\degree$ .

Right Triangle

It has one angle          = $90\degree$ .

Obtuse  Triangle

It has one angle          > $90\degree$ .

Multiple Choice

Based on the angle measures of this triangle, what classification would it belong to?

• Acute Triangle

• Obtuse Triangle

• Right Triangle

Multiple Choice

Study the figure and classify that kind of triangle it is?

• Acute Triangle

• Obtuse Triangle

• Right Triangle

Multiple Choice

Classify what kind of triangle is this according to angle?

• Acute Triangle

• Obtuse Triangle

• Right Triangle

Triangles can be classified according to the length of their sides.

Triangles are polygons, they can be regular or irregular.

Equilateral Triangle

It has three equal sides.

Isoceles Triangle

It has two equal sides.

ScaleneTriangle

It has no equal sides.

Multiple Choice

Based on the side lengths of this triangle, what classification would it belong?

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

Multiple Choice

Based on the side lengths of this triangle, what classification would it belong?

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

Multiple Choice

Based on the side lengths of this triangle, what classification would it belong?

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle