The three angles of a rectangle are 100°, 60°, and 70°, find the measure of fourth angle.
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1
Answer:
the fourth angle is 130°
Step-by-step explanation:
the angle of rectangle are 360°
100+60+70+x=360
230+x=360
x=360-230
x=130
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100+60+70+n=360
230+n=360
n=360-230
n=130
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