A B C D is a parallelogram in which /A...

`A B C D` is a parallelogram in which `/_A=70^@` Compute `/_B ,\ /_C\ a n d\ /_D`

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"we know that the sum of the adjacent angles is `180^@`
`/_A+/_D=180^@`
`/_D=110^@`
and from opposite angle
`/_D=/_B=110^@`
`/_C=/_A=70^@`

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