12. Compute the values of x and y in the following figures:
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(1) y = 180-114 = 66.
2x = 180-66 = 114. Therefore x = 57 degrees.
(2) In small triangle, x+x-2 = 180-90.
2x -2 = 90. Therefore x = 46 degree.
Big triangle 3y+4y -1 = 90 degree.
7y = 91. Therefore y = 91/7 = 13 degree.
(3) In small triangle since one angle is 100 degree and other two sides are equal, each angle = 180-100/2 = 40, and in big triangle also since opposite sides are equal, x = 50 degree.
Hope this answer helps you. Please mark as brainliest! :)
2x = 180-66 = 114. Therefore x = 57 degrees.
(2) In small triangle, x+x-2 = 180-90.
2x -2 = 90. Therefore x = 46 degree.
Big triangle 3y+4y -1 = 90 degree.
7y = 91. Therefore y = 91/7 = 13 degree.
(3) In small triangle since one angle is 100 degree and other two sides are equal, each angle = 180-100/2 = 40, and in big triangle also since opposite sides are equal, x = 50 degree.
Hope this answer helps you. Please mark as brainliest! :)
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