how do I find the degree measure of a lettered angle?

Question

anonymous · Answer

Could you please be more specific? Attach a drawing/picture if possible.

anonymous · Answer

http://msgiwa1.weebly.com/uploads/2/3/3/5/23354938/agcg.u3_-_day_24b_hw_other_angles.pdf

anonymous · Answer

hopefully this helps??

anonymous · Answer

what number or diagram on that sheet

anonymous · Answer

page 1 with the one underneath the riddle

anonymous · Answer

alright well for the first two, they are basically the same. When you have an angle, that looks at an arc like it does in the first two diagrams, the angle and the arc are going to be the same. So for the first one the angle is 75 DEGREES because the arc is 75. For the second one the arc is going to be 85 degrees because the angle is 85 degrees

anonymous · Answer

lemme figure out the third one now

anonymous · Answer

http://www.sparknotes.com/math/geometry2/theorems/section4.rhtml ^This has the theorems, you might want to check it out

ranga · Answer

Inscribed Angle = 1/2 * arc angle 
Arc Angle is same as the angle made by the arc at the center of the circle.

For the first one, inscribed angle A = 1/2 * arc angle = 1/2 * 75 = 37.5 degrees.

ranga · Answer

|dw:1395265861622:dw|

anonymous · Answer

so its half of all of them??

ranga · Answer

In the second one you are given the inscribed angle and you have to find the arc angle P which will be double the inscribed angle.

anonymous · Answer

240 times itself?

ranga · Answer

What is your answer for the second one?

anonymous · Answer

85?

ranga · Answer

No.  Look at my reply before the previous one.

anonymous · Answer

wouldn't that be a really high number. Because that would mean i would have to do 85 times 85?

ranga · Answer

"double" means times 2.  If I have $5 and I double it it becomes $10 not $5 * $5

anonymous · Answer

170

ranga · Answer

yes.

anonymous · Answer

so i was told that the third one is different?

ranga · Answer

Yes, the third one is different.  Come back to it later.  Finish as many problems as possible that make use of the concepts I mentioned earlier:
Arc Angle is same as the angle made by the arc at the center of the circle.
Inscribed Angle = 1/2 * arc angle (or 1/2 * angle made by the arc at the center)

anonymous · Answer

are you a math teacher?

anonymous · Answer

and there was only 2 others i could do that were the same as the other?

math_genius123 · Answer

yep all good here

anonymous · Answer

like im doing this right?

math_genius123 · Answer

yeah ur good ;-)

anonymous · Answer

ok thx :)

math_genius123 · Answer

np

anonymous · Answer

yeah cuz I have no idea how to do the rest of the problems.. will you help me??

math_genius123 · Answer

um i dont know what grade ur in

math_genius123 · Answer

i can help but i need age and grade

anonymous · Answer

that's weird.. so no thanks

math_genius123 · Answer

wait ok fine just grade

math_genius123 · Answer

idk what the grade is i might not know them

anonymous · Answer

its on the link above! duh!

math_genius123 · Answer

sorry sorry

anonymous · Answer

k so are you gonna help me or not?

math_genius123 · Answer

yeah sure babe

anonymous · Answer

yeah don't call me that and just tell me either how to do this or leave!

math_genius123 · Answer

ok sorry ok what u need help what question

ranga · Answer

This link should help you answer the remaining questions: http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm

math_genius123 · Answer

yep thats it