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1. |
If you arrange five 3-inch equilateral triangles so that any two sides are aligned exactly, what is the perimeter of any figure formed? |
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A. |
21 in. |
B. |
9 in. |
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C. |
18 in. |
D. |
15 in. |
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Hint |
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2. |
If you arrange seven 2-inch equilateral triangles so that any two sides are aligned exactly, what is the perimeter of any figure formed? |
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A. |
42 in. |
B. |
21 in. |
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C. |
14 in. |
D. |
18 in. |
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Hint |
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3. |
Using square ABCD with s = 6 inches, fold C to A, then B to D. Describe the shape and find the area of the figure. |
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A. |
isosceles triangle with base of 3 in.;9 in.2 |
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B. |
equilateral triangle with s = 6 in.; 36 in2 |
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C. |
isosceles triangle with base of 6 in.;9 in.2 |
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D. |
equilateral triangle with s = 3 in.; 36 in.2 |
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Hint |
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4. |
Using square ABCD with s = 6 inches, fold C to A, then B to D to find center F. Fold A, B, C and D to F. What best describes the figure? |
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A. |
pentagon |
B. |
triangle |
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C. |
hexagon |
D. |
square |
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Hint |
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5. |
Using square ABCD with s = 6 inches, fold C to A, then B to D to find center F. Fold C to A, then fold A, B, and D to F . What best describes the figure? |
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A. |
triangle |
B. |
square |
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C. |
pentagon |
D. |
rectangle |
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Hint |
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