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11-05-2018
Mathematics

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How do you do this and what is the answer please

How do you do this and what is the answer please class=

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popalabdulqayou popalabdulqayou

11-05-2018

all the opposite angles are equal in a parallelogram:

so AB=DB shows it is an isosceles triangle:

so the two angles on the sides are congruent,

let x to be one of the angles:

2x+28=180

2x=152

x=76=∠A

∠A is opposite of ∠DCB so ∠DCB is 76° because of the parallelogram properties

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