# Introduction to lineal drawing and mensuration

Depository of the British and Foreign School Society, 1847 - 48 sider

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### Innhold

 Del 1 22 Del 2 30
 Del 3 32

### Populære avsnitt

Side 40 - To find the solidity of a cone. RULE. Multiply the area of the base by the perpendicular height, and ^ of the product will be the solidity.
Side 40 - To find the solidity of a cylinder. RULE. — Multiply the area of the base by the altitude, and the product will be the solidity.
Side 15 - A Segment is any part of a circle bounded by an arc and its chord. 51. A Semicircle is half the circle, or a segment cut off by a diameter. The half circumference is sometimes called the Semicircle. 52. A...
Side 9 - Hexagon, of six sides; a Heptagon, seven; an Octagon, eight; a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon, twelve sides.
Side 35 - Triangles on the same base, and between the same parallels, are equal.
Side 35 - Any two angles of a triangle are together less than two right angles.
Side 37 - To find the area of a trapezium. RULE. — Divide the trapezium into two triangles by a diagonal, and then find the areas of these triangles ; their sum will be the area of the trapezium.
Side 14 - ... foursided figure with all its sides equal, and all its angles right angles.
Side 38 - Ibs. 7 oz. to ounces. 2. The proportion of the diameter of a circle to its circumference is very nearly 113 to 355; find the circumference of a circle whose diameter is 1 32 feet.
Side 36 - I 8.78 .|- yards breadth of the walk. PROBLEM II. To find the area of a rhombus or rhomboid. RULE. — Multiply the length of the base by the perpendicular height. 6. The base of a rhombus being 12 feet, and its height 8 feet. Required the area. Ans. 96 feet. PROBLEM III.