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rsetser6989
07.10.2019 •
Mathematics
Determine the measure of ∠nop.
a) 15°
b) 20°
c) 40°
d) 50°
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Ответ:
The correct option is B.
Step-by-step explanation:
Let the center of the circle is E, and the line ON intersect the circle at A and D. The line OP intersect the circle at B and C.
Let the measure of ∠NOP be x.
Draw line segments AC, BD, AE, BE, CE and DE.
According to the central angle theorem, the angle inscribed on the circle from the angle two point on the circle is half of its central angle.
By using central angle theorem,
According to the exterior angle theorem, the sum of two interior angles of a triangle is equal to the exterior angle of third vertex.
By using exterior angle property of a triangle,
Subtract both sides by 15.
The measure of ∠NOP is 15 degree. Therefore option B is correct.
Ответ:
24, because area means to multipy and it gives 6 ins. and 4 ins. so 6x4 is 24. Hope I was helpful.