Question

In parallelogram ABCD, angle A is 6x + 4 and angle B is 140°. Show your work in finding the value of x.

Answer 1

What are the properties you know about the angles in a parallelogram?

Answer 2

opposite angles are congruennt

Answer 3

@timo86m can you help me

Answer 4

I am very confused. Can someone please help me?

Answer 5

b=d,
c=a,
6x+4=c,
b+d+c+a=360

solve that system of equations :)

Answer 6

ooh and
b=140,
b=d,
c=a,
6x+4=c,
b+d+c+a=360

Answer 7

x = 6
a = 40, b = 140, c = 40, d = 140

Answer 8

b=d,
c=a,
6x+4=c,
b+d+c+a=360
140+ 140+ 6x+4 + 6x+4
280+ 12x+8
+8
288+12x=360
-288 -288
12x=72
x= 6