Elements of GeometryGinn, Heath & Company, 1884 |
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Σελίδα 8
... Vertex , and the lines are called the Sides of the angle . An angle is designated by placing a letter at its vertex , and one at each of its sides . In reading , we name the three let- ters , putting the letter at the vertex between the ...
... Vertex , and the lines are called the Sides of the angle . An angle is designated by placing a letter at its vertex , and one at each of its sides . In reading , we name the three let- ters , putting the letter at the vertex between the ...
Σελίδα 9
... 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 included between two straight lines which meet each other so that the two adjacent angles formed by ...
... 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 included between two straight lines which meet each other so that the two adjacent angles formed by ...
Σελίδα 10
... vertex , and their sides extending in opposite directions . Thus the angles AOD and COB are vertical angles , as also the angles AOC and DO B. A D B C A C- D B ON ANGULAR MAGNITUDE . 33. Let the lines B B ' and A A ' be in the same ...
... vertex , and their sides extending in opposite directions . Thus the angles AOD and COB are vertical angles , as also the angles AOC and DO B. A D B C A C- D B ON ANGULAR MAGNITUDE . 33. Let the lines B B ' and A A ' be in the same ...
Σελίδα 11
... vertices coincide in position and their sides in direction . In applying this test of equality , we assume that a line may be moved from one place to another without altering its length ; that an angle may be taken up , turned over ...
... vertices coincide in position and their sides in direction . In applying this test of equality , we assume that a line may be moved from one place to another without altering its length ; that an angle may be taken up , turned over ...
Σελίδα 12
... vertex B shall fall on B ' , then if the side BA fall on B'A ' , the angle ABC equals the angle A'B'C ' ; if the side BA fall between B'C ' and B'A ' in the direction B ' D , the angle ABC is less than A ' B ' C " ; but if the side B A ...
... vertex B shall fall on B ' , then if the side BA fall on B'A ' , the angle ABC equals the angle A'B'C ' ; if the side BA fall between B'C ' and B'A ' in the direction B ' D , the angle ABC is less than A ' B ' C " ; but if the side B A ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
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