#shape
30 messages · Page 1 of 1 (latest)
you can find out x using symmetry in that left shape
2x + 144 x 3 = (n - 2) x 180
2x + 144 x 3 = 3 x 180
x = 54
and then use the right shapes symmetry
to work out the angle wedged between y
so you get 144 x 2 + 2z = (4 - 2) x 180
z = 36
and you know that x + y + z = 144
therefore y = 144 - 54 - 36 = 54 = x
QED
how did you form this equation?
same process for this
ohhhhhhhhh
where’s the (4-2) x180 come from?
holy shit
this is the formula to work out the sum of all
interior angles
sum of interior angles