# Junior High School Mathematics: first and third course, Volume 3

Macmillan Company, 1919
0 Reviews
Reviews aren't verified, but Google checks for and removes fake content when it's identified

### What people are saying -Write a review

We haven't found any reviews in the usual places.

### Contents

 POSITIVE AND NEGATIVE NUMBERS 63 ADDITION AND SUBTRACTION OF ALGEBRAIC 70 IX 105 FACTORS AND EQUATIONS 113 RADICALS AND ROOTS 131 RATIO PROPORTION AND VARIATION 152 XIV 169
 XV 191 XVI 200 XVII 221 CIRCLES 234 SIMILAR TRIANGLES 244 FORMULAS OF MENSURATION 274 APPENDIX 285

### Popular passages

Page 25 - The square root of a number is one of the two equal factors of the number.
Page 50 - The specific gravity of a substance is the ratio of the weight of the substance to the weight of the same volume of...
Page 227 - An exterior angle of a triangle is equal to the sum of the two opposite interior angles.
Page 156 - The first and last terms of a proportion are called the extremes ; the second and third terms are called the means. In the proportion | = ��, we see that 7 x 15 = 3 x 35.
Page 204 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.
Page 260 - In a right triangle the square of the hypotenuse equals the sum of the squares of the other two sides or legs.
Page 38 - Pythagorean theorem, which states that the square of the hypotenuse of a right triangle equals the sum of the squares of the other two sides.
Page 203 - Obtuse Acute Equiangular 64. Corresponding Angles and Sides. If two triangles have the angles of the one respectively equal to the angles of the other, the equal angles are called corresponding angles, and the sides opposite these angles are called corresponding sides. Corresponding parts are also called homologous parts. 65. Square. A rectilinear figure having four equal sides and four right angles is called a square. 66. Congruent. If two figures can be made to coincide in all their parts, they...
Page 230 - If a line is perpendicular to one of two parallel lines, it is perpendicular to the other also.
Page 236 - A Sphere is a body bounded by a uniformly curved surface, all the points of which are equally distant from a point within called the center.