coordinate

Question: If the points $(a,b),\,(a',b')$and $(a-a',b-b')$are collinear, then



1) $ab'=a'b$
2) $ab=a'b'$
3) $aa'=bb'$
4) ${{a}^{2}}+{{b}^{2}}=1$
Solution: Explanation: No Explanation
Points related to triangle (Orthocente Circumcentre Incentre) Area of some geometrical figures Collinearity

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