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In a parallelogram A B C D ,/D=115^@, de...

In a parallelogram `A B C D ,/_D=115^@,` determine the measure of `/_A` and `/_B`

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"In a parallelogram `A B C D` given `/_D=115^@`
in parallelogram sum of opposite angles is `180^@`so
`/_A+/_D=180^`@
`/_A=180^@-/_D`
`/_A=65^@`
opoosite angles are equal to each other so
`/_B=/_A=65^@`
`/_C=/_D=115^@`"
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