Τι λένε οι χρήστες - Σύνταξη κριτικής
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acting altitude amount angle applied attraction base beam body called center of gravity circle coefficient column considered course cubic diameter difference direction distance divided Draw earth energy equal equation EXAMPLES FOR PRACTICE fall feet foot force formula friction gear given gives greater head heat Hence hour increased iron latitude length less liquid load longitude mass mean measured meridian miles minute motion move multiplied necessary observation obtain opposite parallel pass perpendicular plane position pounds pounds per square pressure proportional prove pulley raise represented resistance result shaft ship side similar space square inch straight line stress substance Suppose surface teeth temperature tends Theorem third triangle true unit velocity vertical volume weight wheel
Σελίδα 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.
Σελίδα 32 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.
Σελίδα 6 - 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.
Σελίδα 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.
Σελίδα 54 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.
Σελίδα 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.
Σελίδα 31 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.
Σελίδα 60 - The area of a triangle is equal to one-half the product of its base and altitude.