Given: a is the midpoint of zp
xy=za
prove: xy=ap

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Since the midpoint of a line segment ZP is  A and XY = ZA therefore XY is equal also to AP as midpoint divides a line segment into two equal segments. For example the total length of line segment is 10" then to get the midpoint you divide with to so the midpoint is in 5".

A. dividing 99 by 204 will tell you that 99 out of 204 of the people were females at the action movie.