Question

help

Answer 1

c

Answer 2

and whys thats

Answer 3

radius 3 circle shifted to -3,2
radius r circle shifted to (a,b)
(x-a)^2+(y-b)^2=r^2

Answer 4

mk

Answer 5

aren't they equal?

Answer 6

25?

Answer 7

I'm pretty sure it's only equal if the angle isnt touching the circle.
I hated this unit of geometry.

Answer 8

yeah almost positive

Answer 9

am i correct or no

Answer 10

Yes.

Answer 11

yes

Answer 12

hint: inscribed angle theorem

https://www.mathsisfun.com/geometry/circle-theorems.html

Answer 13

And for the question before, it should be 50.

Answer 14

http://www.mathwarehouse.com/geometry/circle/inscribed-angle.php

Answer 15

@Seratul nice demo!

Answer 16

"The measure of the inscribed angle is half of measure of the intercepted arc (This only works for the most frequently studied case when the vertex point such as B is not within arc AC.)"
In other words, if the angle doesn't touch the circle, then it's equal. If it does, the angle is half. In makes sense if you think about it cause 180 degrees is a triangle and 360 is a circle.

Answer 17

Thanks :)

Answer 18

Okay lol. After some research, I found how to do it.
First, you subtract the angle with the arc. Then, you divide by 2 :)
130-50=80
80/2=40

Answer 19

ty