Question

Please help me solve it, I'm struck

Answer 1

hey dear friend !!!
the word bisect means to divide it into two parts so ..
from the quadrilateral DCBA
we got two line segments RP and SQ
so as shown in the figure the quadrilateral is a square...
as we know that the square is both equilateral and equiangular..
so a line segment passing from a side of the plane to the opposite side's mid would of course bisect it ...
hope it helps...