Books Books
The median to the base of an isosceles triangle is perpendicular to the base.
Plane Geometry - Page 88
by Fletcher Durell - 1904 - 372 pages

## Plane Geometry

Walter Burton Ford, Charles Ammermann - Geometry, Modern - 1923 - 406 pages
...CD. What other lines are parallel ? [HINT. See §§ 3, 45, 54.] 10. Prove that the median (see § 33) to the base of an isosceles triangle is perpendicular to the base. 11. Prove that if a median in any triangle is perpendicular to the base to which it is drawn, the triangle...

## Plane and Solid Geometry

Walter Burton Ford, Charles Ammerman - Geometry, Plane - 1923 - 408 pages
...CD. What other lines are parallel? [HINT. See §§ 3, 45, 54.] 10. Prove that the median (see § 33) to the base of an isosceles triangle is perpendicular to the base. 11. Prove that if a median in any triangle is perpendicular to the base to which it is drawn, the triangle...

## The Teaching of Junior High School Mathematics

David Eugene Smith, William David Reeve - Mathematics - 1927 - 428 pages
...definition for the name of the thing defined. Thus instead of thinking too long about proving that the median to the base of an isosceles triangle is perpendicular to the base, let him draw the figure and think that there is given c AC = EC, AD = BD, and that there is to be proved...