Spin-Span-Spun

Geometry Level pending

Find the coordinates of Point A ( 234 , 542 ) (234,542) after a 90° clockwise rotation around the center ( 232 , 236 ) (232, -236)

Assume your answer is ( x , y ) (x,y) . Put your final answer as x y x-y .


The answer is 1248.

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1 solution

Palla Tan
Jun 8, 2018

There are many ways to find the answer, but most might require graph paper.

Here's a way without GP:

First, find if the four points have common factors. (In this case, 2 )

Second, use this:

* NOTE: This only works for Cartesian planes that have the axis ratio (1:1). *

You'll get the answer (1010,-238)

1010-(-238)=1248

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