Question

Plz reply WITH STEP BY STEP EXPLANATION

Answer 1

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$\angle pqs=40$

pq$\parallel$st

$\twoheadrightarrow$ $\angle pqs=40$ = $\angle rst=40$      because they are alternate interior angles

$\angle rst=40$  

$\angle qrt=65$

$\angle qrt$ + $\angle srt$  = 180

$\angle srt$ = 180-65

$\angle srt$ = 115

$\angle srt$ + $\angle rst$ +$\angle rts$ = 180 angle sum property of a triangle

$\angle rts$ = 180-115-40

           180-155

$\angle rts$ = 25