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ABCD acute altitude base bisector bisects chord circle circumference circumscribed coincide common construct contains denoted describe determine diagonal diameter difference direction distance divided Draw drawn equal equidistant equilateral triangle equivalent EXERCISES exterior angle extremities figure Find Find the area formed four geometric given circle given line given point greater GROUP Hence hexagon hypotenuse included inscribed intersect isosceles triangle joining length Let the pupil limit mean measure median meeting method midpoint opposite pair parallel lines parallelogram passes perimeter perpendicular plane polygon Post PROBLEM produced Proof Prop properties proportional PROPOSITION prove quadrilateral radii radius ratio rectangle regular polygon respectively right angles right triangle segments sides similar square straight line symmetry tangent THEOREM third trapezoid unit variable vertex vertices
Σελίδα 82 - Prove analytically that the medians of a triangle meet in a point. 70. Prove analytically that the perpendiculars from the vertices of a triangle to the opposite sides meet in a point.
Σελίδα 88 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 239 - If two triangles have an angle of one equal to an angle of the other, and...
Σελίδα 47 - If two triangles have two sides of one equal respectively to two sides of the other...
Σελίδα 255 - If two triangles have two sides of one equal to two sides of the other but the third side of the first greater than the thin!
Σελίδα 269 - The circumference of a circle is greater than the perimeter of any inscribed polygon.
Σελίδα 100 - If the diagonals of a quadrilateral bisect each other at right angles, the figure is a rhombus.
Σελίδα 115 - In the same circle or in equal circles, if two chords are unequally distant from the center, they are unequal, and the chord at the less distance is the greater.