Question

help me to solve this question
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with proper answer
3marks Question​

Answer 1

let third vertex (x,y)

solve

x^2+y^2=(x-3)^2+(y-3)^2=9+3

solve

x^2+y^2=12

(x-3)^2+(y-3)^2=12

x^2+y^2=(x-3)^2+(y-3)^2