Regents Exam Questions CC.G.GMD.4: Rotations of Two-Dimensional Objects
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CC.G.GMD.4: Identify the shapes of two-dimensional cross-sections of threedimensional objects, and identify three-dimensional objects generated by rotations of twodimensional objects.
1 Which object is formed when right triangle RST shown below is rotated around leg
1)
2)
3)
4)
?
a pyramid with a square base
an isosceles triangle
a right triangle
a cone
2 If the rectangle below is continuously rotated about side w, which solid figure is formed?
1)
2)
3)
4)
pyramid
rectangular prism
cone
cylinder
Regents Exam Questions CC.G.GMD.4: Rotations of Two-Dimensional Objects
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Name: __________________________________
3 Triangle ABC represents a metal flag on pole AD, as shown in the accompanying diagram.
On a windy day the triangle spins around the pole so fast that it looks like a threedimensional shape.
Which shape would the spinning flag create?
1) sphere
2) pyramid
3) right circular cylinder
4) cone
Regents Exam Questions CC.G.GMD.4: Cross-Sections of Three-Dimensional Objects
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1 ANS: 4
2 ANS: 4
3 ANS: 4
REF: 061501geo
REF: 081503geo
REF: 010417a