idkman1
contestada

PLEASE PLEASE HELP!! I'm a bit behind with math, and you'd be doing me a huge huge favor! thank you so much in advance. (:

PLEASE PLEASE HELP Im a bit behind with math and youd be doing me a huge huge favor thank you so much in advance class=

Respuesta :

all triangles equal 180 the exterior line and the missing corner are supplementary meaning that that 1=168
It is 168. Because the right angle is 90 degrees. The other one is 78. 78+98 = 168. So 180 degrees - 12 degrees is 168.