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" The straight line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of it 46 INTERCEPTS BY PARALLEL LINES. "
Euclid - Page 99
by Euclid, Rupert Deakin - 1903 - 164 pages
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Trust Basics: An Introduction to the Products and Services of the Trust Industry

Monty P. Gregor - Law - 1998 - 284 pages
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A Vector Space Approach to Geometry

Melvin Hausner - Mathematics - 1998 - 418 pages
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Basic Geometry

George David Birkhoff, Ralph Beatley - Mathematics - 2000 - 304 pages
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An Introduction to Mechanics

N. Basu, S. Nanda, P. C. Nayak - Mathematics - 1999 - 438 pages
...and b = b\i + bJ + b3k are collinear. 6. Prove by vector method that the line joining the midpoints of two sides of a triangle is parallel to the third side and is half of the third side. 7. Show that, the internal bisectors of the angles of the triangle are concurrent....
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A Course in Modern Geometries

Judith Cederberg - Mathematics - 2004 - 472 pages
...verify a number of affine properties, including the following. Property la A line joining the midpoints of two sides of a triangle is parallel to the third side. Proof Let M be the midpoint of AB in AABC and let I be the unique parallel to BC through M (see Exercise...
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Calendar

University College, London - 1889 - 468 pages
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Calculus: Concepts and Methods

K. G. Binmore, Joan Davies - Business & Economics - 2001 - 574 pages
...to prove the following elementary geometrical results: (i)* The line segment joining the midpoints of two sides of a triangle is parallel to the third side and equal to half of it. (ii) If one pair of opposite sides of a quadrilateral is parallel and equal. then so also is the other...
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Hungarian Problem Book III

György Hajós, Andy Liu, G. Neukomm, János Surányi - Mathematics - 2001 - 164 pages
...the other side that is also part of the locus. Midpoint Theorem. The segment joining the midpoints of two sides of a triangle is parallel to the third side and equal to half its length. Proof. Let E and F be the respective midpoints of the sides CA and AB of an arbitrary triangle...
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Statics

Lawrence E. Goodman, William H. Warner - Technology & Engineering - 2012 - 404 pages
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Math for All Learners: Geometry

Pam Meader, Judy Storer - Education - 2001 - 108 pages
...sides of a triangle using a compass. • discover that a segment whose endpoints are the midpoints of two sides of a triangle is parallel to the third side of the triangle, and its length is one half the length of the third side. Overview Through construction...
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