Question

Which of the following are NOT sufficient to prove that a quadrilateral is a parallelogram?

I. Two pairs of opposite angles congruent.
II. Both pairs of opposite sides are parallel.
III. Both pairs of opposite sides are congruent.
IV. A pair of opposite angles congruent and a pair of opposite sides congruent.
V. A pair of adjacent angles are supplementary.
VI. One pair of opposite sides are both parallel and congruent.
VII. A pair of opposite sides parallel and the other pair of opposite sides congruent.
VIII. The diagonals bisect each other.



V and VII
IV, V,

Answer 1

a V and VII
IV, V, and VI
V, VI, and VII
IV and VI

Answer 2

a b c or d i meant

Answer 3

if it looks like a rectangle and can be squashed, it a parallelagram i believe

Answer 4

V says opposite angles add to 180; now I know opposite angles are equal; but 90+90 are the same and supplementary so lets hold on that one

Answer 5

VII is not sufficient; it can be a iso trap which aint a parallelagram

Answer 6

since a and c include VII and V we should look at VI to see

Answer 7

One pair of opposite sides are both parallel and congruent this ones good for paralells

lets pick (a)

Answer 8

k

Answer 9

GUESS WHAT SIRRRR

Answer 10

crossing fingers

Answer 11

YOUR RIGHT GO YOU GO YOU (: ITS YOUR BIRTHDAY LMBO

Answer 12

:)

Answer 13

52 percet

Answer 14

i aint had to do this much geometry since kindergarten :)