Find the coordinates of the image after a reflection across x=3
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For this questions you need to memorize formula of triangle area. for question 5, just substitute the value into the formula. for Q6 you need to use pythagorean theorem formula to find the lenght of each triangle that i already seperated
You have known the formula Length of base is la division of Area and a haft of the height.
So we have 3
or
and
have fun
So we have 3
or
and
have fun