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according America angle appears arch astronomy axis body called carried centre CHAP chief circle column common considered consists contained continued diameter direction distance divided division earth eclipses equal equator Example expressed extends fall feet figure five fixed fluid force four fraction geometry given glass globe gravity greater half horizon hundred idea islands kind length less light matter means measure Mercury meridian method miles minutes moon motion mountains moving Multiply nature objects observed ocean orbit parallel pass performed planet poles portion pressure principal proportion quantity QUESTIONS receiver remain revolve right angles right line rising round rule sailing ship side signs solid sometimes South space square stars supposed surface telescope term tides tion triangle unit various Venus vessel weight whole
Página 60 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Página 228 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal and directed to contrary pans.
Página 32 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Página 90 - To reduce a mixed number to an improper fraction, Multiply the whole number by the denominator of the fraction, and to the product add the numerator; under this sum write the denominator.
Página 228 - The change of motion is proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Página 55 - PROBLEM I. To find the area of a parallelogram, whether it be a square, a rectangle, a rhombus, or a rhomboides.
Página 157 - It is bounded on the North by the Arctic Ocean ; on the East by the Pacific Ocean ; on the South by the Indian Ocean ; and on the West by the Red Sea, the Mediterranean Sea, the Caspian Sea, and the Oural Mountains.
Página 97 - Multiply the first and second terms together, and divide the product by the third ; the quotient will be the answer in the same denomination as the middle term was reduced into.
Página 19 - ... When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. 13. A term or boundary is the extremity of any thing.