Question

for an isosceles right angle triangle we have of each side a we have (1) Ares=1/2a×a,(2) perimeter=(2+√2)a,(3) hypotenuse ,which of the following is true explain how​

Answer 1

first one is true ie.

area = 1/2*a*a

REASON

consider Δ ABC

here h=a

b=a

∴area of Δ=1/2 bh

                = 1/2*a*a

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