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" If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent. "
The Logic and Utility of Mathematics,: With the Best Methods of Instruction ... - Σελίδα 241
των Charles Davies - 1850 - 375 σελίδες
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The New York Teacher, and the American Educational Monthly, Τόμος 5

1868 - 516 σελίδες
...to those of the other. " — Campbells Rhet. This structure is very often neglected. Examples : "If two triangles have the three sides of the one equal...to the three sides of the other, each to each, the triangles will be equal in all their parts." The article before one here is improper, because the reference...

Elementary Geometry, Τόμος 1

James Maurice Wilson - 1868 - 132 σελίδες
...triangle can be constructed so as to have its sides equal to three given lines, it is clear that if two triangles have the three sides of the one equal to the three sides of the other, these triangles must be identical, or be equal in all respects. And a similar remark may be made on...

Elementary Geometry, Τόμος 2

James Maurice Wilson - 1868 - 150 σελίδες
...are therefore equal. And if the chord AB is given equal to the chord PQ, then the triangles AOB, POQ have the three sides of the one equal to the three sides of the other; and therefore the angle AOB=\he angle POQ; and therefore also the arc AB = the arc PQ. COR. 1. If the...

Elements of Geometry: With Practical Applications to Mensuration

Benjamin Greenleaf - 1868 - 340 σελίδες
...than ABC. PROPOSITION XVII. — THEOREM. ELEMENTS OP GEOMETRY. Let ABC, DBF be two triangles, having the three sides of the one equal to the three sides of the other, eaeh to each, namely, AB to DE, AC toDF, andCB toEF; then their triangles will be equivalent. Let 0...

Marks' First Lessons in Geometry: Objectively Presented

Bernhard Marks - 1869 - 170 σελίδες
...c, opposite the side A B. 'D It PROPOSITION XIX. THEOREM. DEMONSTRATION. We wish to prove, that, If two triangles have the three sides of the one equal to the three sides of the other, each to each, they are equal in all their parts. Let the two triangles ABC, ADC, have the side AB of the one equal...

Elements of Geometry, Plane and Spherical: With Numerous Practical Problems

Horatio Nelson Robinson - 1869 - 276 σελίδες
...remain ED = CF, (Ax. 3); but BE = AC, and AF= BD, (Th. 24); hence we have two A's, CAF and EBD, which have the three sides of the one equal to the three sides of the other, each to each; therefore, the two A's are equal, (Th. 21). If, from the whole figure ABDC, we take away the A CAF,...

Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - 1870 - 392 σελίδες
...called a direct, and the latter an indirect demonstration. THEOREM via. If two triangles have tlie three sides of the one equal to the three sides of the other, each to each, the three angles will aho be equal, each to each. Let the two triangles ABC, ABD, have the side AB equal to the side AB,...

Elements of geometry, containing the first two (third and fourth ..., Μέρος 1

Euclides - 1871 - 136 σελίδες
...two angles of a triangle be.equal, the sides wMch tubtend them are also equal. (Eucl. i. 6.) SE 2 If two triangles have the three sides of the one equal...to the three sides of the other, each to each, the triangles must be equal in all respects. -25 q _ Let the three sides of the A s ABO, DEF be equal,...

Marks' First Lessons in Geometry: In Two Parts : Objectively Presented and ...

Bernard Marks - 1871 - 172 σελίδες
...side A B. THEOREMS ILLUSTRATED. PROPOSITION XIX. THEOREM. DEMONSTRATION. We wish to prove that, If two triangles have the three sides of the one equal to the three sides of the other, each to each, they are equal in all their part's. Let the two triangles ABC, ADC, have the side AB of the one equal...

Elements of Geometry, Conic Sections, and Plane Trigonometry

Elias Loomis - 1871 - 302 σελίδες
...each to each, and the triangles themselves will be • •qua', Let ABC, DEF be two triangles having the three sides of the one equal to the three sides of the other, viz. : AB equal to DE. BC to EF, and AC to DF ; then' will the three angles also be equal, viz. : the...




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