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Types of TrianglesTypes of TrianglesStage 6 - Year 11Stage 6 - Year 11

Mathematic(Preliminary)

2

Types of Triangles

Based on Sides

a. Three equal sides.b. Three equal angles (60o).

Equilateral

3

a. Two equal sides.b. Two equal base angles.

Types of Triangles

Based on Sides Isosceles

4

a. No equal sides.b. No equal angles.

Types of Triangles

Based on Sides Scalene

5

All angles are a acute angles

< 90o

Types of Triangles

Based on Angles

Acute Angled

6

One Right Angle

= 90o

Types of Triangles

Based on Angles

Acute Angled

7

One Obtuse Angle

>90o and <180o

Types of Triangles

Based on Angles

Obtuse Angled Triangle