Page 84 - NUMINO Challenge_D1
P. 84
Problem solving Key Points
1 Find the numbers of faces, edges, and vertices Find the numbers of
of a triangular prism when a corner section is cut faces, edges, and
out, as shown below. vertices before and
after the corner
section is cut out.
2 A pentagonal pyramid is cut across a plane that is The shape of the
parallel to its base such that two new solid figures section is a
are formed. Find the total numbers of faces, pentagon.
edges, and vertices respectively.
81Geometry
1 Find the numbers of faces, edges, and vertices Find the numbers of
of a triangular prism when a corner section is cut faces, edges, and
out, as shown below. vertices before and
after the corner
section is cut out.
2 A pentagonal pyramid is cut across a plane that is The shape of the
parallel to its base such that two new solid figures section is a
are formed. Find the total numbers of faces, pentagon.
edges, and vertices respectively.
81Geometry
