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acting altitude amount angle attraction base beam becomes body called center of gravity chart circle coefficient column compass considered course cubic diameter difference direction distance divided Draw earth energy equal equation EXAMPLES FOR PRACTICE fall feet foot force formula friction given gives greater head heat Hence hour inches increased iron latitude length less liquid load logarithm longitude magnetism mass mean measured meridian method miles minute motion move multiplied necessary obtain opposite parallel pass perpendicular plane position pounds pressure proportional raise represent resistance resultant shaft ship shows side space square square inch stress substance Suppose surface teeth temperature tends Theorem tion triangle true unit velocity vertical vessel volume weight wheel
Side 70 - PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC.
Side 32 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.
Side 8 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Side 7 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Side 54 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.
Side 21 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Side 31 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.
Side 60 - The area of a triangle is equal to one-half the product of its base and altitude.