 | Education Department - 1879 - 1118 páginas
...and CD, "rect. AB. CD." Other abbreviations, if employed, must not be ambiguous. 1. Parallelograms upon the same base and between the same parallels are equal to one another. Construct an isosceles triangle equal to a given parallelogram. 2. In obtuse-angled triangles, if a... | |
 | John James Milne - 1999 - 372 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | 1862 - 564 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | 1865 - 564 páginas
...propositions : — (1) The angles of a triangle are together equal to two right angles. (2) Parallelograms upon the same base, and between the same parallels, are equal to one another. (3) The squares on the sides containing the right angle of a right-angled triangle are equal to the... | |
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TRIANGLES upon the same base, and between the same parallels, are equal to one another. 
