Elements of Mechanical Drawing Volume 353 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1894 edition. Excerpt: ... 10. Prom one extremity of a line 3 in. long draw a second line making an angle of 60 with the first. Similarly construct an angle of 75 at the other end. 11. Describe a circle 3 in. in diameter, and divide it into angles of 15 by means of triangles and T square. TRIANGLES. 12. Draw an equilateral triangle having a base in. 13. Construct an isosceles triangle having a base 2 in. and the equal sides 2 in. 14. Construct an isosceles triangle having a base of 1 in. and the equal angles 75. 15. Construct an isosceles triangle having a base of 3 in. and the angle at the vertex 150. 16. Construct a scalene triangle having sides 2J, 2f, and 31$ in. 17. Construct a right angle triangle having base 2f in. and one angle of 30. TANGENTS. 18. Draw a tangent to a circle 2J in. in diameter. 19. Draw a tangent to the middle point of the arc of a circle of 2 in. radius, having a chord of 2 in. Do not use the centre of circle. 20. Draw a tangent to a circle 2f in. in diameter from a point 2 in. from centre of circle. 21. Draw two lines making an angle of 45 with each other, and a circle tangent to these lines at a point 1f in. from vertex of the angle. 22. Draw two lines making an angle of 30 with each other, and two circles tangent to each other and these lines. The diameter of the smaller circle is f in. 23. Draw a tangent to two circles having diameters of 1f and f in. and their centres 2 in. apart. 24. Draw a circle having a diameter of 1 in. tangent to two circles whose diameters are 1f and 1 in. and whose centres are 1f in. apart. 25. Prescribe three points and draw a circle through them. INSCRIBED AND CIRCUMSCRIBED POLYGONS. 26. Circumscribe a circle about a scalene triangle having sides 1 in., 2 in., and 2f in. 27. Inscribe...