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Additional Practice<br />
Kim has a piece of wire that is 100 cm long. She will cut the wire into<br />
pieces to build a pyramid. She wants the bottom of the pyramid to be<br />
a square. She also wants to use all the wire.<br />
3. a. How many pieces of wire does she need to build the pyramid?<br />
b. Many lengths are possible for Kim’s pieces of wire. Describe<br />
two of these possibilities.<br />
4. a. How many faces does the shape have<br />
that can be folded with this net?<br />
b. And how many vertices in the net at<br />
the right? And how many edges?<br />
c. What is the name of this shape?<br />
d. How many face diagonals will the<br />
shape have?<br />
e. And how many space diagonals?<br />
Show how you found your answer.<br />
5. Rajeev makes this drawing of a<br />
bar model of a cube. Can you<br />
build this model? Explain.<br />
Section<br />
C<br />
<strong>Polygons</strong><br />
8<br />
9<br />
10<br />
1<br />
2<br />
Use Student Activity Sheet 19 for the following<br />
problems.<br />
1. Which polygons can be made with equal-size<br />
jumps from one whole number to another on<br />
this diagram?<br />
7<br />
3<br />
2. Do you see a relationship between your<br />
answer to problem 1 <strong>and</strong> the numbers on the<br />
diagram? If so, describe the relationship.<br />
6 4<br />
5<br />
Additional Practice 55
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