if wxyz is a parallelogram which of the following statements must be true

A angle w is supplementary to angle y

B angle w is congruent to y

C wxyz is a parallelogram

D wxyz is a trapezoid

E angle w is a right angle

F wx is perpendicular to xy

Question

if wxyz is a parallelogram which of the following statements must be true 

A angle w is supplementary to angle y

B angle w is congruent to y

C wxyz is a parallelogram

D wxyz is a trapezoid

E angle w is a right angle 

F wx is perpendicular to xy

anonymous · Answer

i need help

maheshmeghwal9 · Answer

|dw:1341544395256:dw|

maheshmeghwal9 · Answer

Opposite sides & opposite angles of a parallelogram are concurrent
Adjacent angles of a parallelogram are supplementary.

maheshmeghwal9 · Answer

And one more thing
a parallelogram is itself a special type of quadrilateral
therefore it can't be any other quadrilateral such as trapezoid or rhombus etc.
ok!

maheshmeghwal9 · Answer

Angles of a ||gm aren't right angles
2 obtuse & 2 acute
so the lines of ||gm aren't perpendicular too.

anonymous · Answer

so are the answers a,b, and c

maheshmeghwal9 · Answer

no; only B & C are answers
"A" won't be the answer becoz opposite angles are only congruent not supplementary.

but remember adjacent angles same as angle "W" & "X" will be supplementary.

anonymous · Answer

the answer was wrong thanks for your help though

maheshmeghwal9 · Answer

wt do u mean 
wt are the answers?

anonymous · Answer

the quiz i was taking said it was a,b,c,e,f

maheshmeghwal9 · Answer

May be ur quiz has considered square & rectangle also as a parallelogram so the answers are abcef but considering parallelogram in a strict way; i mean take ||gm as a special quadrilateral then u will get only b & c as answers take a look @ this http://www.coolmath.com/reference/parallelograms.html