英文平行線及垂直線分點數學題2(20分)

1. AP = square root of [(-2-1)2 + (7-3)2] = 5
BP = square root of [(2-1)2 + (-2-3)2] = square root of 26
CP = 6-1 = 5 (As C and P are having the same y-coordinate, we just have to subtract the x-coordinates to find the distance)
So A and C are equidistant from P.




5. Slope of AB = (1-2) / (-2-3) = 1/5 (0.2)
Slope of AC = (1-(-4)) / (-2-5) = - 5/7 (-0.714)
Slope of BC = (-4-2) / (5-3) = -3
So the smallest slope is BC.