Elements of GeometryGinn, Heath & Company, 1884 |
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Σελίδα 9
... angle , consequently , will not be changed . 24. DEF . Adjacent Angles are angles having a common vertex and a common side between them . Thus the angles CDE and CDF are adjacent angles . E D A B F 25. DEF . A Right Angle is an angle ...
... angle , consequently , will not be changed . 24. DEF . Adjacent Angles are angles having a common vertex and a common side between them . Thus the angles CDE and CDF are adjacent angles . E D A B F 25. DEF . A Right Angle is an angle ...
Σελίδα 10
... right angles and the given angle . Thus ACD is the supplement of the angle D C B ; also D C B is the supplement of the angle AC D. 32. DEF . Vertical Angles are angles which have the same vertex , and their sides extending in opposite ...
... right angles and the given angle . Thus ACD is the supplement of the angle D C B ; also D C B is the supplement of the angle AC D. 32. DEF . Vertical Angles are angles which have the same vertex , and their sides extending in opposite ...
Σελίδα 11
... right angles ; and the sum of all the angles about a point on one side of a straight line drawn through that point , as AOB + BOC + COD , etc. , Fig . 2 , is equal to two right angles . Hence two adjacent angles , O CA and OCB , formed ...
... right angles ; and the sum of all the angles about a point on one side of a straight line drawn through that point , as AOB + BOC + COD , etc. , Fig . 2 , is equal to two right angles . Hence two adjacent angles , O CA and OCB , formed ...
Σελίδα 14
... right angle . rt . s right angles . > is ( or are ) greater than . < is ( or are ) less than . rt . A right triangle . rt . A right triangles . O circle . > circles . + increased by . - diminished by . X multiplied by . ÷ divided by ...
... right angle . rt . s right angles . > is ( or are ) greater than . < is ( or are ) less than . rt . A right triangle . rt . A right triangles . O circle . > circles . + increased by . - diminished by . X multiplied by . ÷ divided by ...
Σελίδα 15
... angles are equal . A- 0 B P Let line 0 P cross A B at C. ZOCB LACP . = We are to prove LOCA + Z OCB = 2 rt . 4 ... right angles . PROPOSITION II . THEOREM . 51. When the sum of PERPENDICULAR AND OBLIQUE LINES . 15.
... angles are equal . A- 0 B P Let line 0 P cross A B at C. ZOCB LACP . = We are to prove LOCA + Z OCB = 2 rt . 4 ... right angles . PROPOSITION II . THEOREM . 51. When the sum of PERPENDICULAR AND OBLIQUE LINES . 15.
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A B C AABC ABCD adjacent angles alt.-int altitude apothem arc A B bisect centre circumference circumscribed coincide COROLLARY describe an arc diagonals diameter divided Draw equal arcs equal distances equal respectively equiangular polygon equilateral equilateral polygon equivalent exterior angles figure given line given point given polygon greater homologous sides hypotenuse isosceles triangle Let A B Let ABC limit line A B Mailing price measured by arc middle point number of sides parallelogram perimeter perpendicular PHILLIPS EXETER ACADEMY plane PROBLEM prove Q. E. D. PROPOSITION quadrilateral radii radius equal ratio rect rectangles regular inscribed regular polygon required to construct rhombus right angles right triangle SCHOLIUM segment sides of equal sides of similar similar polygons subtend tangent THEOREM third side triangle ABC vertex vertices Wentworth