pls ans fast find measures
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Step-by-step explanation:
ZPRS=ZPQR+ZRTS (external angle =sum of 2 internal angles opposite to it)
...ZPRS=40+30=70
ZRST+ZTRS+ZSTR=180(Angle sum
property in a triangle)
ZRTS+20+70=180
ZRTS=180-90=90
HOPE IT'S CLEAR TO YOU PLEASE MARK AS BRAINLIST ANSWER
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