Elementary geometry |
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ABĀ² ABCD ALGEBRA altitude angle ABC angle AOB angular points ARITHMETIC base bisectors bisects the angle BROOKE FOSS WESTCOTT Cambridge centre chord circumference cloth coincide common measure corresponding angles Crown 8vo describe a circle diagonals diameter divided draw drawn ELEMENTARY equal angles equiangular equivalent Euclid exterior angles Fcap Find the locus four right angles Geometry given angle given circle given line given point given ratio given straight line greater Hence inscribed intersect isosceles triangle Let ABC magnitudes Mathematical meet middle points opposite angles opposite sides parallel parallelogram perpendicular PROBLEM Proof proportional prove quadrilateral radius rectangle contained regular polygon respectively equal rhombus right angles right-angled triangle Schools Second Edition segments shew similar similar triangles square subtend tangent THEOREM 12 three sides touch TREATISE triangle ABC vertical angle