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**©G Dear2008 – Not to be sold/Free to use**

Mathematic (Preliminary) Geometry Types of Triangles Stage 6 - Year 11 Press Ctrl-A ©G Dear2008 – Not to be sold/Free to use

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**Based on Sides Types of Triangles Equilateral a. Three equal sides.**

b. Three equal angles (60o).

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**Based on Sides Types of Triangles Isosceles a. Two equal sides.**

b. Two equal base angles.

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**Based on Sides Types of Triangles Scalene a. No equal sides.**

b. No equal angles.

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**Based on Angles Types of Triangles Acute Angled**

All angles are a acute angles < 90o

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Types of Triangles Based on Angles Acute Angled One Right Angle = 90o

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**Obtuse Angled Triangle**

Types of Triangles Based on Angles Obtuse Angled Triangle One Obtuse Angle >90o and <180o

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