Prove that ( 2,2),(-2,1),(5,2) are the vertices of right angle triangl

1.	Prove that ( 2,2),(-2,1),(5,2) are the vertices of right angle triangle
Answer» Distance between (2,2)&(-2,1) is root 17Distance between (-2,1)& (5,2) isRoot 50Distance between (5,2)&(2,2) isRoot 9So as per this Question is mistake

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