In triangle ABC, AB > AC. E is the mid-point of BC and AD is perpendicular to BC. Prove that AB2 + AC2 = 2.AE2 + 2.BE2 Class 9 Pythagoras Theorem

 

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In a right angled triangle, five times the square on the hypotenuse is equal to four times the sum of the squares on the medians drawn from the acute angles. Prove it.

If ABC is a right angled triangle in which angle A=90°, AD is perpendicular to BC and AB:AC=3:4 and AD=8, then BD=?

Class 9 ICSE SELINA MATH EX 13A question 6