nhester2056
20.08.2019 •
Mathematics
Sv is an angle bisector of ∠rst. if m∠rsv = (3x + 7)° and m∠rst = (8x − 12)°, find x.
select each definition, postulate, or theorem you will use.
a angle addition postulate
b linear pair theorem
c definition of midpoint
d definition of angle bisector
the solution is x = .
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Ответ:
∠RST = (8x − 12)°
∠RSV=∠VST=1/2∠RST
(3x + 7)°+(3x + 7)°= (8x − 12)°
3x+7+3x+7=8x-12
3x+3x-8=-12-7-7
-2x=-2
x=-2/(-2)
x=1
А. Angle Addition Postulate
х=1
Ответ:
True, because both numbers cancel each other out.