 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 99by Euclid, Rupert Deakin - 1903 - 164 pagesFull view - About this book
 | The Editors of REA, 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... | |
 | 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... | |
 | 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... | |
 | 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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