krzivenko
krzivenko
04-02-2018
Mathematics
contestada
Help me find the x please
Respuesta :
jdoe0001
jdoe0001
04-02-2018
∡IAD and ∡GCJ are
alternate exterior angles
, and therefore equal.
that means ∡IAD is 70°, now, ∡DAK is a right-angle, and "x" is there, and ∡x + ∡IAD add up to 90°, and therefore are
supplementary angles
.
we know ∡IAD is 70°, therefore then
x + 70 = 90
x = 90 - 70.
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