Which rule describes the composition of transformations that maps ΔJKL to ΔJ"K"L"?

QUESTION POSTED AT 01/06/2020 - 03:28 PM

Answered by admin AT 01/06/2020 - 03:28 PM

From the figure, it can be seen that ΔJ'K'L' is formed from ΔJKL by the rotation of ΔJKL by 90 degrees counter-clockwise.
It can also be seen that
ΔJ"K"L" is obtained from ΔJ'K'L' by the refrection of ΔJ'K'L' across the x-axis.

Therefore, the rule that describes the composition of transformations that maps ΔJKL to ΔJ"K"L" is given by
R_{0,90}\circ r_{x-axis}(x,y)
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