4.) In Fig. 6.31, if PQ II ST, 2 POR = 110° and
<RST=130°, find Z ORS.
[Hint : Draw a line parallel to ST through
point R.)
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Answer:
120
Step-by-step explanation:
POR +RST + Z =360
110 +130 +Z = 360
240 + Z =360
Z = 360-240
Z= 120
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