Question

describe the number of lines of symmetry of a circle

describe the number planes of symmetry of a cone or cylinder.

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Answer 1

Step-by-step explanation:

•Since there are an infinite number of lines through the center, the circle has an infinite number of lines of symmetry. When the circle is folded over a line of symmetry, the parts of the circle on each side of the line match up. This means that the parts of the circle on each side of the line must have the same area.

•Two of the faces of a cylinder are circles.  Circles have an infinite number of lines of symmetry.  Therefore cylinders have an infinite number of planes of symmetry. 18

Answer 2

Step-by-step explanation:

A circle has an infinite number of symmetries. This contrasts with polygons such as the triangles and quadrilaterals considered in 4. G Lines of symmetry for triangles and 4.