2006-10-03 16:00:35 · 7 answers · asked by katrina 1 in Science & Mathematics ➔ Mathematics
Opposite angles of a parallelogram are equal and adjacent angles are supplements. If d and e are adjacent then E= 180 - D = 123
2006-10-03 16:06:12 · answer #1 · answered by wild_turkey_willie 5 · 0⤊ 0⤋
Do you really think we can help you with this if we don't have the picture of the parallelogram and where the sides and angles are?
But the answer is most likely 180 - 57 = 123
2006-10-03 16:03:22 · answer #2 · answered by DanE 7 · 0⤊ 0⤋
A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal).
The angles of a parallelogram satisfy the identities
A = C
B = D
and
A+B = 180 degrees.
ANSWER:
if D=F=57 and E=G
then
D+E=180
E=180-57
E=123 degrees
2006-10-03 16:11:30 · answer #3 · answered by kezongputi 2 · 0⤊ 0⤋
consecutive angles of a parallelogram are supplemental, meaning they add up to 180 degrees. 180 - 57 = 123, so the measure of angle E is 123 degrees.
2006-10-03 16:04:07 · answer #4 · answered by Marcella S 5 · 0⤊ 0⤋
Consecutive angles of a parallelogram, like D and E, are supplementary (add up to 180). So figure out what plus 57 equals 180.
2006-10-03 16:04:21 · answer #5 · answered by hayharbr 7 · 0⤊ 0⤋
180 - 57 = 123 degrees
2006-10-03 16:03:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
180-D=E
180-57=E
E=123
2006-10-03 16:38:38 · answer #7 · answered by ViCKi!™|` 5 · 0⤊ 0⤋