Homework Statement
Find x. L1 and L2 are parallel
choices:
a)2°40'
b)2°30'
c)2°45'
d)2°15'
e)2°20'
Homework Equations
Σleft∠ = Σright∠
The Attempt at a Solution
2x+1+4x-1+4x-1 = 2x-1+2x+4+3x+2
10x-1=7x+5
3x=6
x=2°
Not sure how the answers include minutes '
Maybe I'm overlooking something?
yeah tbh I was kinda lazy to think about it, just following jambaugh's way I can find the following is true:
(θ) + (90) + (180 - x) + (90 - 4θ) = 180
-3θ + 360 - x = 180
180 - 3θ = x
By the same reasoning we already know:
θ + 2θ + 3θ + 3θ = 180
9θ = 180
θ = 20
so:
180 - 3(20) = x
x = 120
Nice. I didn't look it that way, 'follow the turns', cool. Thank you for your reply.
I'm interested to see another way of solving for X that doesn't involve using the polygon like I did.
And yes, the drawing is not to scale at all.
Homework Statement
Find x. L1 and L2 are parallel
Choices:
a)100
b)120
c)140
d)150
e)135
Homework Equations
From the image, the angles of the polygon in blue should satisfy:
6θ + 90 + 4θ + 2θ + 90 + x = 540
12θ + x = 360
x = 360 - 12θ
The Attempt at a Solution
I couldn't figure out how to...