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CBSE Class 12-science Answered

Let P be a regular twelve-sided polygon. The number of right-angled triangles formed by the vertices of P is  
Asked by jaswinganeshkumar | 19 Sep, 2020, 12:28: PM
answered-by-expert Expert Answer

We get a 90 degree angle only when a line joining two opposite vertices of the polygon form the 2 vertex of triangle

So, the number of right angled traingles formed = 10 x 6 = 60

Answered by Renu Varma | 21 Sep, 2020, 01:34: PM

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