Question

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Answer 1

x = 63°

it is an isosceles triangle, so K and M are equal

Explanation:

let K be x, since K=M means both equals x

x + x + 54° = 180°

2x + 54° = 180°

2x = 180° minus 54°

2x = 126°

x = 63°

to prove

63° + 63° + 54° = 180°

peace