Plane and solid geometry . ints in the perimeter ofbase AB; , every point in the perimeter of base AB will fallupon a corresponding point in the perimeter of base CD. 8. Likewise it can be shown that every point in the perim-eter of base CD will fall upon a corresponding point in theperimeter of base AB. 9. .-. base AB may be made to coincide with base CD, 10. .*. base AB = base CD. 828. Cor. I. The sections of a cylinder made hy tivoparallel planes cutting all the elements are equal. 829. Cor. II. Every section of a cylinder made hy aplane parallel to its base is equal to the base.
Plane and solid geometry . ints in the perimeter ofbase AB; , every point in the perimeter of base AB will fallupon a corresponding point in the perimeter of base CD. 8. Likewise it can be shown that every point in the perim-eter of base CD will fall upon a corresponding point in theperimeter of base AB. 9. .-. base AB may be made to coincide with base CD, 10. .*. base AB = base CD. 828. Cor. I. The sections of a cylinder made hy tivoparallel planes cutting all the elements are equal. 829. Cor. II. Every section of a cylinder made hy aplane parallel to its base is equal to the base. 386 SOLID GEOMETRY Ex. 1367. Every section of a cylinder made by a plane parallel toits base is a circle, if the base is a circle. Ex. 1368. If a line joins the centers of the bases of a cylinder, thisline passes through the center of every section of the cylinder parallel tothe bases, if the bases are circles. 830. Def. A right section of a cylinder is a section formedby a plane perpendicular to an element, as section
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeometr, bookyear1912
