Central Angles - XP Math - Forums

 XP Math - Forums Central Angles

04-14-2012   #1
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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?

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 The Following 3 Users Say Thank You to WWE For This Useful Post: avleen kaur (04-15-2012), orishorjo (04-15-2012), zacmarz (04-15-2012)
 04-14-2012 #2 Mr. Hui Last Achievements     Join Date: Mar 2005 Posts: 10,637 Thanks: 464 Thanked 2,604 Times in 952 Posts 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 Attached Thumbnails   __________________ Do Math and you can do Anything!
 The Following 5 Users Say Thank You to Mr. Hui For This Useful Post: avleen kaur (04-15-2012), MATH master-shanto (04-16-2012), orishorjo (04-15-2012), WWE (04-15-2012), zacmarz (04-15-2012)
04-16-2012   #3
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Rmp?

Quote:
 Originally Posted by Mr. Hui 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
Please go to question 29 in the attachment below. In this figure would angle RMP be a central angle?
Attached Files
 nys math test grade 6 b2.pdf (116.8 KB, 4 views)

 The Following User Says Thank You to WWE For This Useful Post: MATH master-shanto (04-16-2012)
 04-16-2012 #4 Mr. Hui Last Achievements     Join Date: Mar 2005 Posts: 10,637 Thanks: 464 Thanked 2,604 Times in 952 Posts Yes angle RMP is the same central angle as angle PMR. __________________ Do Math and you can do Anything!
 The Following User Says Thank You to Mr. Hui For This Useful Post: MATH master-shanto (04-16-2012)

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