Question

Need help solving this! Really counfused! Please explain!
http://prntscr.com/dg5uuw

Answer 1

Find the angle of the inside first. Remember that the angles of a triangle add up to 180 degrees.

Answer 2

Okay!
So the missing angle for the inside is 80?

Answer 3

@steve816

Answer 4

Correct, now the other angle is complementary, so all you do is 180 - 80.

Answer 5

So when I subtract 80 from 180 I get my angle for CAD

Answer 6

angle is supplementary*

Answer 7

@Vijeya3 THe last time I took geometry class was in 8th grade lol.

Answer 8

oh LOL sorry thenx'D

Answer 9

No, don't be sorry, thanks for correcting be xD

Answer 10

So is that correct Steve? :L

Answer 11

angle X = 90 + 20

Answer 12

Theorem:- The external angle of a triangle is equal to the sum of the 2 opposite internal angles.

Answer 13

* correction 80 + 20

Answer 14

So x=180??

Answer 15

NO
x = 80 + 20 = 100

Answer 16

Oh okay, sorry. I don't think I read that correctly.

Answer 17

thats OK
So in your diagran m<CAD = 80 + 20 = 100 degrees

Answer 18

Okay! Thank you! :)

Answer 19

the way steve did it was correct but the external angle theorem is more direct.

Answer 20

Okay! Thanks for letting me know! :)

Answer 21

yw