There are 6, you'd think there would be 8 but the answer is actually 6. A diagonal is a line segment that connects to vertices, the two vertices chosen do not count when forming the triangle, two vertices that are adjacent to that chosen vertex are NOT included when forming the diagonal. It's confusing, but I hope this helps. If you have any follow up questions I'd love to answer them.
Answer:
r u wanting the volume for each shape or what?
Step-by-step explanation:
Vertical angles are always equal. The vertical angles are the ones opposite each other. Therefore x would equal 40.
