Question

ABCD is congruent to EFGH, the measure of angle B = the measure of angle BCD = 90, and the measure of angle BAD = 131. What is the measure of angle GHE?

Answer 1

in ABCD
angleA = angleBAD = 131 deg
angleB = 90 deg
angleC = angleBCD = 90 deg

since sum of all four interior angles of a quadrilateral is always 360 deg
Hence angleD = 360 - (131 + 90 + 90) =360 - 311 = 49 deg

since ABCD is congruent to EFGH, vertex D corresponds to vertex H
and angleD = angleGHE

so angleGHE = 49 deg

Answer 2

thx!!

Answer 3

Thanks for the help! :)

Answer 4

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Answer 5

done :)

Answer 6

Many thanks Saffire !!!!!! :D

50 more to go for a century !!!!