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miv72 [106K]
1 year ago
8

90° Find mZR. A. 30° B. 60° C. 120° D. 180° (2x) to P 90° S

Mathematics
2 answers:
svp [43]1 year ago
7 0

Answer:

120°

Step-by-step explanation:

Angles in a quadrilateral add to 360°, so

90+90+x+2x=360

180+3x=360

3x=180

x=60

So, angle R measures 120°.

Monica [59]1 year ago
4 0
The correct would be 120°
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