## anonymous one year ago A quadrilateral PQRS is inscribed in a circle, as shown below: A quadrilateral PQRS is inscribed in a circle. The measure of angle PQR is 80 degrees. What is the measure of arc PQR? 260° 200° 100° 320°

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1. triciaal

click on draw below and use the pencil to sketch it helps to "see" what is going on

2. triciaal

the angles in a circle = 360 angles in a quadrilateral = 360 angles in a triangle = 180 angles on a straight line = 180

3. triciaal

the arc length is the ratio of the angle formed with the circumference

4. anonymous

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5. triciaal

|dw:1441498856712:dw|

6. triciaal

A quadrilateral PQRS is inscribed in a circle

7. triciaal

8. anonymous

so you plug it in then dived ?

9. triciaal

do you have the actual picture you can upload? I prefer the sketch

10. anonymous

11. triciaal

I really think this is the picture for the first question only because I just helped you. use the formula I gave yes plug the numbers to find the length of the arc CD is l; and the angle theta is 45

12. triciaal

this new question asks for the 4 sided figure PQRS inside a circle

13. anonymous

What is the arc length of arc CD in the circle below? Circle A is shown with a radius labeled 15 feet and a central angle marked 45 degrees. 3.14 feet 4.88 feet 6.98 feet 11.78 feet thats the one that goes with thee picture, i confused the 2

14. triciaal

15. anonymous

b

16. triciaal

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17. triciaal

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18. triciaal

you really had me checking myself. no not b

19. anonymous

its D , I messed up on the 2ed part

20. anonymous

i see my mistake , Thanks

21. triciaal

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22. triciaal

now you might want to close this and open the quad in circle question again

23. triciaal

you are welcome

24. anonymous

okay i have one more question

25. anonymous

Which equation could be used to solve for the measure of angle Q? Circle N is shown with a quadrilateral OPQR inscribed inside it. Angle O is labeled x degrees. Angle P is labeled y degrees. Angle Q is labeled z degrees. Angle R is labeled w degrees. z − (w + x) = 360 z + w + x = 360 z + x = 180 z + w = 180

26. anonymous

i got C , is that right ?

27. triciaal

can you draw the diagram here please and label what is given i'll be back