Question

please help me

Answer 1

How?

Answer 2

i need help with a few geometry questions

Answer 3

the first one is calculate the number of vertices of the solid, given that it has 7 faces, 2 pentagons and 5 triangles

Answer 4

10... count the "points"

Answer 5

However I don't see any triangles I see 5 rectangles

Answer 6

the second one is: Determine whether each solid is a polyhedron.

Answer 7

well for the first one it says to uses this formula f+v=e+2

Answer 8

Figure out what f v and e are. I think f is faces and v is verticies

Answer 9

f is number of faces, v is vertices, e is edges

Answer 10

That would be faces + vertices = edges + 2
faces = 7, (those are flat surfaces)
edges = 15 (those are like the edge of a table)
7 + v = 15 + 2
7 + 10 = 15 + 2
Vertices = 10

Answer 11

The second question is yes for both.. Definition is a solid with flat faces

Answer 12

decide whether the polyhedron is regular and/or convex