Question

What is measure angle 1 in this parallelogram?

Answer 1

Did you know, that in a parallelogram, opposite angles/opposite sides are equal?

Answer 2

Yes, but this is complicated because of the variables it has.

Answer 3

So, angle 1 is equal to 3m +20

There's also another thing you should know, is that adjacent angles in a parallelogram are supplementary

So, 3m+20+5m=180
Can you solve for m?

Answer 4

i can try

Answer 5

m = 20

Answer 6

and angle 1 is 100 degrees

Answer 7

Yes, m=20
But re-put m into 3m+20, it's not 100

Answer 8

3m+20=80

Answer 9

ohhh i did the wrong side earlier

Answer 10

yep! Angle 1 =80 degrees

Answer 11

Thank you so much!!!! I suck at geometry.

Answer 12

yw~

(and everyone used to suck at everything, before being taught how to do it:) )

Answer 13

that is so very true. Wise words from a wise teacher XD

Answer 14

lmaoo
thx~

Answer 15

np