### Contents

 Section 1 3 Section 2 15 Section 3 16 Section 4 39 Section 5 42 Section 6 46
 Section 7 74 Section 8 82 Section 9 96 Section 10 Copyright

### Popular passages

Page 23 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
Page 22 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, they are equal in all their parts.
Page 29 - The first and fourth terms of a proportion are called the extremes, and the second and third terms, the means. Thus, in the foregoing proportion, 8 and 3 are the extremes and 4 and 6 are the means.
Page 39 - ... the sum of the angles of any triangle is equal to two right angles.
Page 23 - If two triangles have two angles, and the included side of the one equal to two angles and the included side of the other, they are equal in all their parts.
Page 61 - RULE. — Extract the square root of the difference between the square of the hypotenuse and the square of the given side; and the result is the required side.