Show that the points A (a,0), B (-a,0), C (0, a√3 ) from equilateral triangle.
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( a,0) ,B ( a,0),c (0,a/3 from the book ok
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this not an equilateral triangle
y2-y1/x2-x1 is the slope formula if slope of two point are equal to slope of another tow point then their distance is equal
0-0/-a-a =0/-2a not equal to -root 3
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