![Properties of Triangle - types & formulas [Video & Practice]](https://cdn.e-gmat.com/blogs/wp-content/uploads/2019/07/Properties-of-triangle-Acute-angled-triangle.png "Properties of Triangle - types & formulas [Video & Practice]")
Properties of Triangle - types & formulas [Video & Practice]
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![Properties of Triangle - types & formulas [Video & Practice]](https://cdn.e-gmat.com/blogs/wp-content/uploads/2019/07/Basic-Properties-of-Triangles-1-1024x533.png "Properties of Triangle - types & formulas [Video & Practice]")
Properties of Triangle - types & formulas [Video & Practice]
Angles in triangles and quadrilaterals - KS3 Maths - BBC Bitesize - BBC Bitesize
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The total angles of a triangle must equal 180 degrees
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The angle sum of a Triangle is 180° - lesson with proof & varied exercises
