Answer:
C
Step-by-step explanation:
A triangle is 180 degrees so 120+40 is 160
180-160=20
check the picture below.
14
add the stuff together
y=105 for x
y=75
2y-30=180 180 (straight line) 180-105=75
+30 +30
2y=210
/2 /2
That is a Triangular Prism.
