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04142012  #1 
Join Date: Apr 2012
Posts: 7

Central Angles
On my homework I have a question that says, "The points N, R, and P are on the circle below. Point M is in the center of the circle. Connect three points to form a central angle." Below the question it shows a big circle with points R, N, P, and M.
This is on a state test from 2009. My class did not learn what central angles are. Can someone please tell me what a central angle is or what it looks like? Thanks, WWE 
04142012  #2 
Join Date: Mar 2005
Posts: 10,609

A central angle is an angle which vertex is the center of a circle, and whose sides pass through a pair of points on the circle.
In the following figure: angle NMP angle NMR angle PMR are all central angles
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04162012  #3 
Join Date: Apr 2012
Posts: 7

Rmp?
Please go to question 29 in the attachment below. In this figure would angle RMP be a central angle?

04162012  #4 
Join Date: Mar 2005
Posts: 10,609

Yes angle RMP is the same central angle as angle PMR.
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