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Answer Key
Grade 7 Math: Slicing 3D Figures
1.
the 2D shape you see where a plane cuts a 3D solid
2.
a flat surface that extends infinitely in two dimensions
3.
cut through it with a plane to reveal a cross section
4.
a circle (or disk)
5.
a rectangle
6.
a square (or rectangle if offset)
7.
Yes — depending on the plane’s orientation
8.
a circle
9.
the 2D figure formed where a plane cuts a solid
10.
rectangle (through diameter)
11.
plane can cut six faces of the cube
12.
sphere
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