Answer:
17 + 16 + 90 =123
180-123=
x= 57
Step-by-step explanation:
right triangle=the square which =90 and you add what in the triangle and then subtract 180 from the answer because all triangles = to 180.
HOPE THAT HELPS
if you are in high school i don't think this is right but i hope it is i am in 7th grade and this is how we do triangles
