Question

Quadrilateral ABCD is inscribed in circle N, as shown below. What is the measure of 10 years ago

Answer 1

http://www.mathopenref.com/quadrilateralinscribedangles.html <--- what do you think it may be?

Answer 2

@jdoe0001 please help i have 10 mins

Answer 3

i have ten mins to explain and figure out the answer

Answer 4

well, did you see the "inscribed quadrilateral conjecture"?

the opposite angles are 180, or "supplementary angles"

Answer 5

@jdoe0001 im lost

Answer 6

so... I assume you haven't seen the link above? http://www.mathopenref.com/quadrilateralinscribedangles.html

Answer 7

i did

Answer 8

i just don't understand it

Answer 9

@jhonyy9

Answer 10

solve for "x"
then to find angle ABC, just use the found "x" in 4x+1 :)

Answer 11

how would i solve for x?

Answer 12

@jdoe0001

Answer 13

im so lost

Answer 14

hmm well (4x+1) + (2x-7) = 180
remove the parentheses
simplify, solve for "x", or "isolate" x

Answer 15

4+1 2-7?

Answer 16

5-5?

Answer 17

4+1? seems to assume x =1
but we dunno what "x" is
so... solve for "x"

Answer 18

6x-6=180

Answer 19

yeap
6x - 6 = 180
then
6x = 180 +6
\(x=\cfrac{180+6}{6}\)

Answer 20

the answer is 125 right?

Answer 21

how you have got for x 125 ?

Answer 22

yes right bc x=31 so 4x+1=125

right sure

Answer 23

nah k you :)

Answer 24

i can't give u both a medal though