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In a parallelogram ABCD , /D=135^@, dete...

In a parallelogram `ABCD , /_D=135^@,` determine the measures of `/_A and /_B`

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we know that the sum of the adjacent angles is `180^@`
`/_A+/_D=180^@`
`/_A=45^@`
and from opposite angle
`/_D=/_B=135^@`
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