plzzz solve maths question
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WHAT EVER IS THE UPPER ANGLE I DONT KNOW
BUT AS WE KNOW THAT SUM OF ALL ANGLES OF A TRIANGLE IS 180
SO,
x + x + supposingly 40= 180
2x + 40 = 180
2x = 180-40
2x = 40
x = 40/2
x = 20
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