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ABCD adjacent algebraic altitude base bisector bisects called chord circumference circumscribed coincide common Construct contained corresponding diagonals diagram for Prop diameter difference distance divide draw drawn equal equilateral triangle equivalent exercises exterior angle figure Find find a point Find the area formed four geometrical given circle given line given point given triangle greater hexagon hypotenuse included inscribed intercepted interior intersecting isosceles triangle length less limit line joining mean proportional measured median meet method midpoints opposite sides parallel parallelogram passes perimeter perpendicular polygon PROBLEM produced Proof PROPOSITION prove quadrilateral quantities radii radius ratio rectangle regular polygon respectively right angle right triangle School segments sides similar smaller square straight line student tangent THEOREM third transform transversal trapezoid triangle are equal unequal vertex Нур
Page 45 - If two triangles have two sides of one equal respectively to two sides of the other, but the included angle of the first triangle 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 31 - The median to the base of an isosceles triangle is perpendicular to the base.
Page 152 - 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 diminished by twice the product of one of those sides and the projection of the other upon that side.
Page 143 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.
Page 149 - If, from a point without a circle, two secants are drawn, the product of one secant and its external segment is equal to the product of the other and its external segment.
Page 131 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Page 14 - Two triangles are equal if two sides and the included angle of the one are equal respectively to two sides and the included angle of the other (sas = sas). Hyp. In A ABC and A'B'C', AB = A'B', BC = B'C', and Z B = Z B'.