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Books Books 1 - 10 of 180 on The line which joins the mid-points of two sides of a triangle is parallel to the....
" The line which joins the mid-points of two sides of a triangle is parallel to the third side and equal to one half of it. "
Plane Geometry - Page 162
by John Wesley Young, Albert John Schwartz - 1915 - 223 pages
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A Treatise on the Higher Plane Curves: Intended as a Sequel to a Treatise on ...

George Salmon - Curves, Plane - 1852 - 316 pages
...bisector of the third angle : interpreted the other way, express that the line joining the middle points of two sides of a triangle is parallel to the third side. 5. We give now some examples of the use of these equations of the first degree. Ex. 1. Tfie bisectors...
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A Treatise on the Higher Plane Curves: Intended as a Sequel to A Treatise on ...

George Salmon - Conic sections - 1852 - 316 pages
...bisector of the third angle : interpreted the other way, express that the line joining the middle points of two sides of a triangle is parallel to the third side. 5. We give now some examples of the use of these equations of the first degree. Ex. 1. Tiie bisectors...
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The American Journal of Education and College Review

Absalom Peters, Henry Barnard, Samuel Sidwell Randall - Education - 1856
...is an easy deduction, from any one of this series, that a straight line cutting off' equimultiples of two sides of a triangle is parallel to the third side ; and, conversely, a parallel to one side cuts off equimultiples of the other two sides. We need now...
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Mechanics Required for the Additional Subjects for Honours ... and for the ...

James L. McDowell - Mechanics - 1867 - 102 pages
...in a point of trisection. (EXERCISES, p. 3, No. 5.) Also 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. (1) Let AB CD be a rhombus. In the triangles ABC, ADC, the sides AB, AC are...
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A school Euclid, being books i. & ii. of Euclid's Elements, with notes by C ...

Charles Mansford - 1874
...parallel to it. Then PQ shall bisect the triangle.] 53. 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. 54. The straight lines joining the middle points of the four sides of any...
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Elements of Euclid [selections from book 1-6] adapted to modern methods in ...

James Bryce - 1874
...2), the corresponding areas are 1, 4, 9, 16, etc. Conversely. — The line joining the middle points of two sides of a triangle is parallel to the third side, and equal to one-half of it. In the triangle ABC, let AB, AC be bisected in D and E. The line joining...
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Euclid simplified, compiled from the most important French works

1875
...corresponding height are given. EXERCISES ON BOOK III. 92. The straight line which joins the centres of two sides of a triangle is parallel to the third side, and equal to half that side. 93. The straight lines which join the centres of the consecutive sides...
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Elements of geometry: with exercises for students, and an introduction to ...

Aaron Schuyler - Geometry - 1876 - 372 pages
...bisects AC. GEOMETRY.— BOOK I. 104. Corollaries. 1. Tlie straight line joining the middle points of two sides of a triangle is parallel to the third side and equal to its half. (?) 2. The straight line drawn from the middle point of one of the non-parallel...
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Exercises on Euclid and in modern geometry, New ed., revised

1878
...proved equal to EC, therefore FH and 11 D are equal. 4. 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. In the Cor. to the last proposition it is proved that the straight line EH...
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The Solution of Geometrical Exercises, Explained and Illustrated: With a ...

Charles Mansford - Euclid's Elements - 1879 - 104 pages
...parallel to it. Then PQ shall bisect the triangle.] 53. 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. 54. The straight lines joining the middle points of the four sides of any...
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