Plz plz plz plz plz plz plz plz plz plz plz plz plz I need help

asked Apr 2, 2022 8.2k views

4 votes

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2 votes

Its a parallelogram

<C+<D=<A+<C

Also

AB||CD

$\\ \rm\Rrightarrow <A+<B=180$

$\\ \rm\Rrightarrow (1)/(2)<A+(1)/(2)<B=(1)/(2)180$

$\\ \rm\Rrightarrow <PAB+<ABP=90$

Using angle sum property

$\\ \rm\Rrightarrow <APB=180-90=90$

Hence proved

Lassi Autio answered Apr 7, 2022

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