Hello from MrBillDoesMath!
Answer:
75
Discussion:
A plane triangle has 180 degrees. Using this in the diagram gives
x + 81 + angle BAC = 180 (***)
(The diagram is a bit fuzzy but I think the above numbers are accurate)
The diagram also shows that (156 + angle BAC )= 180 as a straight line has 180 degrees. So
angle BAC = 180 - 156 = 24
Substituting this in (***) above gives
x + 81 + 24 = 180 =>
x + 105 = 180 => (as 81 + 24 = 105)
x = 180 107 = 75
Check: Does
x + 81 + angle BAC = 180 ?
75 + 81 + 24 = 180. Yes
Thank you,
MrB
Answer:
8 vertices
Step-by-step explanation:
Use Euler's Theorem: V-E+F=2
F=12
E=18
Thus, we have:
V-18+12=2
V-18=-10
V=8
So there are 8 vertices
.4^6 = .004096 Hoped this helps.
Opposite sides are congruent and have the same slope.