Question

What is the measure of /_A, in degrees?

A. 120 degrees
B. 150 degrees
C. 60 degrees
D. cannot be determined

Answer 1

what do you think?

Answer 2

well i dont know thats why i need help

Answer 3

well, did you see my picture? those 2 black lines are exactly the same length, now check the angles the RED and BLUE lines make :)

Answer 4

im lost here

Answer 5

in your picture, the 2 lines coming from \(\angle A\) are 8 each, so they're equal, and they have a straight line crossing through them

Answer 6

ohkay so what do i do?

Answer 7

because the lines are each 8, the same, that means the "crossing line' crosses them at the same length

Answer 8

check my picture, does the RED line make the angles the same as the BLUE? are they different or the same?

Answer 9

same?

Answer 10

yes, they're the same otherwise the length of each would differ

Answer 11

ohkay.

Answer 12

so what is \(\angle A\)

Answer 13

wouldnt it be 30?

Answer 14

dunno, how many degrees does a triangle have total?

Answer 15

30 degrees

Answer 16

http://4.bp.blogspot.com/-h5pvEzWQSgo/T83wxpu929I/AAAAAAAABAI/ivRrHQnCyGE/s1600/trianglesumtheorem.gif

Answer 17

so it cant be determinded.

Answer 18

well, what do you see in that picture?