In the diagram below, de, df, and ef are
midsegments of abc.
the perimeter of quadrilateral adef is equivalent
to
1) ab + bc + ac
2 1/2 ab + ac
3) 2ab + 24c
4) ab + ac

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

How does reflecting or rotating a figure change the interior angles of the figure?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?