. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . ,as in Figure 5. . A scalene triangle is that which has three unequal sides,as in Figure 6. A right-angled triangle is that which has a right angle,as in Figure 7. An obtuse-angled triangle is that which has an obtuseangle, as in Figure 6. The hypothenuse in a right-angled triangle is the sideopposite the right angle, as in Figure 7. A square is that which has all its sides equal and allits a
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . ,as in Figure 5. . A scalene triangle is that which has three unequal sides,as in Figure 6. A right-angled triangle is that which has a right angle,as in Figure 7. An obtuse-angled triangle is that which has an obtuseangle, as in Figure 6. The hypothenuse in a right-angled triangle is the sideopposite the right angle, as in Figure 7. A square is that which has all its sides equal and allits angles right-angles, as in Figure 8. A rectangle is that which has all its angles right angles,but only its opposite sides equal, as in Figure 9. Figure 9. Figure 10. A rhombus is that which has all its sides equal, but itsangles are not right angles, as in Figure 10. A quadrilateral figure which has its opposite sidesparallel is called a parallelogram, as in Figures 8, 9, and10. 466 SHEET METAL WORKERS MANUAL A line joining two opposite angles of a quadrilateral iscalled a diagonal. An ellipse is a plane figure bounded by one continuouscurve described about two points, so that the sum of the.
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