1. In a A PQR, if ZP = 72º and ZQ = 63º, find ZR.
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Answer:
ZP=72
ZQ=63
in A PQR
ZP+ZQ+ZR=180. (measure of all angle. triangle. of triangle is 180)
72+63+ZR=180
135+ZR=180
ZR=180-135
ZR=45
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