
Concept explainers
(a)
To draw: the pyramid shape top of the monument and label the vertices.
(a)

Answer to Problem 17PPS
Explanation of Solution
Given:
Calculation:
The objective is to draw the pyramid shape top of the monument and label the vertices.
(b)
To identify: the bases, faces, and edges.
(b)

Answer to Problem 17PPS
Face:
Edge:
Vertices:
Explanation of Solution
The objective is to identify the bases, faces and edges.
The faces of the rectangular pyramid are
The edges are the line where the faces intersect. The edges are
The vertices are the point where the edges intersect. The vertices are
(c)
To write: the shape result from vertical, angled ad horizontal cross section of the pyramid.
(c)

Answer to Problem 17PPS
The horizontal cross section is a square.
Explanation of Solution
The objective is to write the shape result from vertical, angled ad horizontal cross section of the pyramid.
The vertical cross section is shown below.
The vertical cross section is a
The angled cross section is shown below.
The angled cross section is a trapezium and a triangle.
The horizontal cross section is shown below.
The horizontal cross section is a square.
(d)
To describe: the angled cross section through the top and base of the monument.
(d)

Answer to Problem 17PPS
The angled cross section through the top is a triangle and the angled cross section through base is a trapezium.
Explanation of Solution
The objective is to describe the angled cross section through the top and base of the monument.
The angled cross section through the top and base shown below
The angled cross section through the top is a triangle and the angled cross section through base is a trapezium.
Chapter 12 Solutions
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