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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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Geometrical Investigations: Illustrating the Art of Discovery in ..., Volume 2

John Pottage - Mathematics - 1983 - 520 pages
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Geometry - Plane, Solid and Analytic Problem Solver

Research & Education Association Editors, Ernest Woodward - Mathematics - 2012 - 1080 pages
...product of the lac . . extremes: — - — ** ad - be \bd (2) A line segment which joins 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. (3) If a line is parallel...
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The High School Geometry Tutor

The Editors of Rea - Business & Economics - 1985 - 366 pages
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Calculus with Analytic Geometry, Volume 2

Edwin Joseph Purcell - Calculus - 1987 - 944 pages
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Mathematics for Elementary Teachers: A Contemporary Approach

Gary L. Musser, William F. Burger - Mathematics - 1988 - 908 pages
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Mathematics for Elementary Teachers: A Contemporary Approach

Gary L. Musser, William F. Burger - Mathematics - 1988 - 908 pages
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Geometry for Enjoyment and Challenge

Richard Rhoad - Geometry - 1988 - 780 pages
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Geometry: A Comprehensive Course

Daniel Pedoe - Mathematics - 1988 - 468 pages
...L', M' and /v" be the midpoints of HA, //Band HC. Using the theorem that the join of the midpoints of two sides of a triangle is parallel to the third side prove that both B'C'M'N' and C'A'N'L' are rectangles, and deduce that A'L', B'M' and C'N' are three...
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Eshbach's Handbook of Engineering Fundamentals

Ovid Wallace Eshbach, Byron D. Tapley - Technology & Engineering - 1990 - 2104 pages
...longest side of a triangle is opposite the largest angle, and vice versa. The line joining the midpoints of two sides of a triangle is parallel to the third side and half its length. If two triangles are mutually equiangular, they are similar, and their corresponding...
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Algebra

T. T. Moh - Mathematics - 1992 - 364 pages
...that V/U is a vector space. | Exercises (1) Use vector space to show that the line passing through the middle points of two sides of a triangle is parallel to the third side. (2) Let Да6с be any triangle. Let us mark down a point b' on the line a6 such that the length ab'...
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