## Secondary-school Mathematics, Book 2D.C. Heath & Company, 1911 - Mathematics |

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25 cents ABCD altitude apothem base and altitude belt bisected bisector carbohydrates cents per pound circle whose radius circumference circumscribed Construct cosine cost cupfuls of flour diameter distance divided divisor drawn eggs equal circles equation equilateral triangle example EXERCISE exponent Extract the square factor Find the angle Find the area Find the length Find the radius fraction Given homologous sides hypotenuse inches inscribed inscribed angle intercepted arcs intersect irrational isosceles trapezoid line shaft logarithm mean proportional median middle points ounces parallel parallelogram perpendicular proof is left protein prove pulley quadratic quadrilateral radii ratio rectangle regular hexagon regular polygon right triangle round steak secant segments similar polygons sine Solve specific gravity square root straight line surd tangent term THEOREM trapezoid triangles are similar weighs wheel

### Popular passages

Page 190 - In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides, minus twice the product of one of these sides and the projection of the other side upon it.

Page 353 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.

Page 187 - If a perpendicular is drawn from the vertex of the right angle to the hypotenuse of a right triangle : 1st.

Page 355 - If two triangles have two sides of one equal respectively to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second.

Page 354 - The sum of two sides of a triangle is greater than the third side, and their difference is less than the third side.

Page 360 - If from, a point without a circle a secant and a tangent are drawn, the tangent is a mean proportional between the whole secant and the external segment.

Page 360 - The. sum of the angles of any polygon is equal to twice as many right angles as the polygon has sides, less four right angles.

Page 354 - Two triangles are congruent if (a) two sides and the included angle of one are equal, respectively, to two sides and the included angle of the other...

Page 184 - Two triangles are similar if an angle of the one is equal to an angle of the other, and the sides including these angles are proportional. 0 B Hyp. In A ABC and A'B'O, <r ZA = ZA\ and AB: A'B

Page 360 - The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.