Answer: 17 degree
Step-by-step explanation:
in isosceles triangle, angles opposite to equal sides r equal
so let that equal angles be 2x, so one of them is x
therefore, by angle sum property
146 + x + x = 180
146 + 2x = 180
2x = 180 - 146
x = 34/2
x = 17degree
therefore, m angleM = 17 degree
Hope it helped u,
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