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Mathematics
Grade9
Easy
Question
A stop sign is a regular geometric figure. What is the measure of the central angle of the stop sign?
30
45
48
135
Hint:
Angle is a figure which is formed when two rays meet at a common point. Angles can be of many types one of them is central angles. Central angle is formed when two radii of a circle meet at the centre the circle. Central angle of a regular polygon can be determined by using the formula . Here, we have to find the central angle of the given regular polygon.
The correct answer is: 45
In the question there is an image of stop sign board using which we have to find the central angle of the stop sign board. Central angle = = = So, the central angle of the stop sign board is . Therefore, the correct option is b, i.e., .