mr0836015
mr0836015
19-12-2020
Mathematics
contestada
ASAP help me with this
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mrjellysquid
mrjellysquid
19-12-2020
120 degrees
angles 1 and 3 are corresponding, therefore they are congruent. set the equations equal, and solve for x. 20x+60=30x+20, 40=10x, x=4. Now plug in x in the equation for angle 1. 20*4+60=measure of angle 1= 120 degrees
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