Question

12 which sequence of rigid motions maps △ let onto △ let

Explanation:

To map △LET onto △L''E''T'', rigid motions preserving size/shape are needed. Observing grid positions, △LET is likely in the second quadrant and △L''E''T'' in the fourth. A common sequence is reflecting over the y-axis (flipping left-right) then reflecting over the x-axis (flipping up-down), which transforms (x,y) to (-x,y) then (-x,-y), equivalent to 180° rotation, aligning the triangles.

Answer:

Reflection over the y-axis followed by reflection over the x-axis.