mid-points of quadrilaterals

what shape do you get when you join the mid-points of any quadrilateral?

looks like a parallelogram
is it?















experiment with shapes (a) by sketching them, then (b) drawing them more accurately on a coordinate grid
or use software

by joining mid-points
what quadrilateral(s) do you start with to get a

• rectangle
• rhombus
• square?