## Mathematics, mechanics, heat |

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### Common terms and phrases

acting altitude amount angle apparent applied attraction base beam body called center of gravity circle compass considered correction course diameter difference direction distance divided Draw earth energy equal equator EXAMPLES FOR PRACTICE fall feet feet per second figure foot force formula friction gear given gives greater head heat Hence hour inches increased iron latitude length less load longitude magnetism mass mean measured meridian method miles minute molecules motion move multiplied necessary observation obtained opposite parallel passed pendulum perpendicular pitch plane position pounds pressure proportional prove pulley raise represented resistance rest resultant ship side space square inch straight line stress Suppose surface teeth temperature tends Theorem tion triangle true unit velocity weight wheel

### Popular passages

Page 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.

Page 39 - A circle is a plane figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within called the center.

Page 32 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.

Page 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.

Page 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.

Page 54 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.

Page 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.

Page 31 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.

Page 60 - The area of a triangle is equal to one-half the product of its base and altitude.

Page 46 - An angle formed by a tangent and a chord is measured by onehalf the intercepted arc.