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Additional Practice<br />
4. a. Suppose you cut this out <strong>and</strong> fold it into a shape. What will<br />
you get?<br />
b. Will the shape become one of the shapes that are on page 2?<br />
Explain.<br />
c. Which shapes on page 2 have only flat faces?<br />
Section<br />
B<br />
Bar Models<br />
Maha has six bars: three are 6 cm long, <strong>and</strong> three are 4 cm long.<br />
She makes a triangle with one of the long bars <strong>and</strong> two of the<br />
shorter ones.<br />
1. a. As carefully <strong>and</strong> accurately as you can, draw this triangle.<br />
b. Draw a triangle with sides 4 cm, 6 cm, <strong>and</strong> 6 cm long.<br />
Maha tries to make a prism with her six bars but finds it impossible.<br />
2. a. Why can’t Maha make a prism using just six bars?<br />
b. How many more bars does she need?<br />
c. What are possible lengths for the additional bars? Include a<br />
drawing to explain your answer.<br />
d. Would the prism you drew for part c be stable? Explain.<br />
54 <strong>Packages</strong> <strong>and</strong> <strong>Polygons</strong>
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