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प्रश्न
Check whether given sides are the sides of right-angled triangles, using Pythagoras theorem
8, 15, 17
उत्तर
Take a = 8, b = 15 and c = 17
Now a2 + b2 = 82 + 152
= 64 + 225
= 289
172 = 289 = c2
∴ a2 + b2 = c2
Yes, By the converse of Pythagoras theorem, the triangle with given measures is a right angled triangle.
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If length of both diagonals of rhombus are 60 and 80, then what is the length of side?
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*(l, m, n are opposite sides of ∠L, ∠M, ∠N respectively)
Activity: In ∆LMN, l = 5, m = 13, n = `square`
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∴By Converse of Pythagoras theorem, ∆LMN is right angled triangle.
