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OpenStudy (anonymous):
In a triangle, the measure of the second angle is twice the measure of the first angle. The third angle is equal to the sum of the other angles.
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OpenStudy (anonymous):
|dw:1346352379546:dw| because its a triangle, A + B + C = 180
OpenStudy (anonymous):
x + 2x + (x +2x) = Sum well known in all triangs ?
OpenStudy (anonymous):
from the information, B = 2A , C = A + 2A = 3A
OpenStudy (anonymous):
@jewjewbri simplify and solve
OpenStudy (anonymous):
therefore A + 2A + 3A = 180 (as @Mikael has already posted)
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OpenStudy (anonymous):
Simplify and solve the equation you gave?
OpenStudy (anonymous):
yes but with 180 as RHS
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