### Фй лЭне пй чсЮуфет -Уэнфбоз ксйфйкЮт

Ден енфпрЯубме ксйфйкЭт уфйт ухнЮиейт фпрпиеуЯет.

### Ресйечьменб

 BOOK VII 142 BOOK VIII 166
 Mensuration of Surfaces 274 Mensuration of Solids O 285

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 241 - In every plane triangle, the sum of two sides is to their difference as the tangent of half the sum of the angles opposite those sides is to the tangent of half their difference.
УелЯдб 19 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
УелЯдб 232 - ... the logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
УелЯдб 168 - The radius of a sphere is a straight line drawn from the centre to any point of the surface ; the diameter or axis is a line passing through this centre, and terminated on both sides by the surface.
УелЯдб 18 - America, but know that we are alive, that two and two make four, and that the sum of any two sides of a triangle is greater than the third side.
УелЯдб 169 - The convex surface of a cylinder is equal to the circumference of its base multiplied by its altitude, Fig.
УелЯдб 20 - In an isosceles triangle the angles opposite the equal sides are equal.
УелЯдб 86 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
УелЯдб 225 - B) = cos A cos B — sin A sin B, (6a) cos (A — B) = cos A cos B + sin A sin B...
УелЯдб 168 - CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.