### ДзмпцйлЮ брпурЬумбфб

УелЯдб 36 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
УелЯдб 17 - If a straight line meets two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
УелЯдб 17 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be taken from equals, the remainders are equal. 4. If equals be added to unequals, the wholes are unequal. 5. If equals be taken from unequals, the remainders are unequal. 6. Things which are double of the same are equal to one another.
УелЯдб 41 - We assume that but one straight line can be drawn through a given point parallel to a given straight line.
УелЯдб 13 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
УелЯдб 16 - LET it be granted that a straight line may be drawn from any one point to any other point.
УелЯдб 54 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
УелЯдб 21 - If two angles of a triangle be equal to one another, the sides also which subtend, or are opposite to, the equal angles, shall be equal to one another.
УелЯдб 22 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base, equal to one another, and likewise those which are terminated in the other extremity.
УелЯдб 12 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.