I think it could be b. (cone) if it means the triangle is rotated literally & in 3D around the line. or it could be d. pyramid if it is meaning that the triangle is flipped across the vertical line.
The correct answer for this problem is A.
#1 is 25% 15/60= 4=0.25=25%
Answer: the answer is C doin the test rn
Step-by-step explanation: