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SabariGiri Residential School
"Smartindia is the best online tool for school students." Ms Deepa Chandran, Principal Anchal
M. G. M. Model School
"Smartindia is one of the best supplementary education tool for school students." Ms Pooja, Principal
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external angles |
| In a triangle an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. The Exterior Angles of a Polygon add up to 360° . |
