Question

find the value of each variable. For each circle the dot represents the center.

Answer 1

number 13
a= 180-95
= 85
angle a = 85/2 = 42.5
angle b = 95/2= 47.5
angle c= 180/2 = 90 or angle c is right angle

Answer 2

can you explain in depth how to do this

Answer 3

Whenever a diameter subtends an angle on the circumference of the circle the angle is 90 degree and sum of angles in a triangle is 180 degree

Answer 4

In a cyclic quadrilateral the opposite angles add up to 180 degree

Answer 5

I get the sum of the angles in the triangle =180 but I still dont understand what it is asking and how to figure it out

Answer 6

@jim_thompson5910

Answer 7

The figure shows many problems.
Which problems do you need help with?

Answer 8

I need to know how for 9 and 12 can you walk me through how to do 9 and then Ill try to do 12

Answer 9

Ok.
The measure of an inscribed angle is half the measure of the arc it intercepts.

Answer 10

Example:

Since the intercepted arc is 90 degrees, the inscribed angle measures 45 degrees.
x = 45 deg.

Answer 11

Sorry, above, I meant
a = 45 deg.

Answer 12

how do you know a=45 deg. sorry I can be a little slow but I try to understand

Answer 13

You're doing the right thing. Ask questions until you understand.
Don't be sorry. I'm more than glad to explain better.

Answer 14

Ok so far?

Answer 15

oh so a=RST I understand so far I think thanks

Answer 16

a is the measure of angle RST.
RT is an arc. The inscribed angle RST intercepts arc RT on the circle.