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Página 9
James Maurice Wilson. When the arms of an angle are in the same straight line , the conjugate angles are equal , and each is then said to be a straight angle . An angle is named by a single letter at its vertex , as A : or by a letter at ...
James Maurice Wilson. When the arms of an angle are in the same straight line , the conjugate angles are equal , and each is then said to be a straight angle . An angle is named by a single letter at its vertex , as A : or by a letter at ...
Página 12
... angles . Diagonal . did ywvía , across from angle to angle . Perimeter . Teρl μeтρéw , to measure round . Triangle ... equal sides . Pentagon . Tévтe ywvla , with five angles . Postulate . Postulatum , a thing requested . Isosceles ...
... angles . Diagonal . did ywvía , across from angle to angle . Perimeter . Teρl μeтρéw , to measure round . Triangle ... equal sides . Pentagon . Tévтe ywvla , with five angles . Postulate . Postulatum , a thing requested . Isosceles ...
Página 13
... equal to , the angle QRS . ( Ax . 1. ) But by Def . 14 , the angle ABC is half the angle DBC ; and the angle PRS is half the angle QRS ; and the halves of equals are equal ... angles made by one SECT . I. ] 13 ANGLES AT A POINT .
... equal to , the angle QRS . ( Ax . 1. ) But by Def . 14 , the angle ABC is half the angle DBC ; and the angle PRS is half the angle QRS ; and the halves of equals are equal ... angles made by one SECT . I. ] 13 ANGLES AT A POINT .
Página 14
... equal to two right angles ; ( Hyp . ) and DBA and DBC , from the figure , make up the angle ABC ; therefore ABC is an angle of two right angles ; and therefore ABC is a straight line . ( Def . 14. ) THEOREM 4 . Q. E. D. If two straight ...
... equal to two right angles ; ( Hyp . ) and DBA and DBC , from the figure , make up the angle ABC ; therefore ABC is an angle of two right angles ; and therefore ABC is a straight line . ( Def . 14. ) THEOREM 4 . Q. E. D. If two straight ...
Página 15
... angles AOC and AOD are together equal to two right angles . ( Th . 2. ) Therefore the angles AOC and COB are equal to the angles AOC and AOD . Take away the common angle AOC ; therefore the angle COB is equal to the angle AOD ...
... angles AOC and AOD are together equal to two right angles . ( Th . 2. ) Therefore the angles AOC and COB are equal to the angles AOC and AOD . Take away the common angle AOC ; therefore the angle COB is equal to the angle AOD ...
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Términos y frases comunes
AB² ABCD alternate angles angle ABC angle APB angle BAC angles are equal angles equal bisector centre chord circumference coincide College Constr construct contrapositive Crown 8vo describe a circle diagonals diameter divided draw Edition equal angles equal circles equiangular Euclid exterior angle fcap Find the locus four right angles Geometry given angle given circle given line given point given rectilineal figure given straight line hypotenuse included angle inscribed intersect isosceles triangle less Let AB Let ABC locus magnitudes meet middle point minor arc opposite angles opposite sides parallel parallelogram perpendicular polygon PROBLEM produced Proof Q. E. D. THEOREM quadrilateral radius rectangle contained reflex angle required to prove rhombus right angles segment semicircle Shew square subtend supplementary supplementary angles tangent THEOREM trapezium triangle ABC triangles are equal unequal
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