| George Albert Wentworth - Geometry - 1888 - 264 pages
...§179 .-. 0 is the centre of symmetry of the figure. § 64 EXERCISES. 34. The median from the vertex **to the base of an isosceles triangle is perpendicular to the base,** and bisects the vertical angle. 35. State and prove the converse. 36. The bisector of an exterior angle... | |
| Wooster Woodruff Beman, David Eugene Smith - Geometry - 1899 - 416 pages
...and substitute the definition for the name of the thing defined. Eg suppose it is to be proved that **the median to the base of an isosceles triangle is perpendicular to the base.** Instead of saying : " Given CMfthe median to the base of the isosceles triangle ABC " (see figure on... | |
| Wooster Woodruff Beman, David Eugene Smith - Geometry, Modern - 1899 - 265 pages
...and substitute the definition for the name of the thing defined. Eg suppose it is to be proved that **the median to the base of an isosceles triangle is perpendicular to the base.** Instead of saying : " Given CM the median to the base of the isosceles triangle ABC " (see figure on... | |
| George Albert Wentworth - Geometry, Modern - 1899 - 276 pages
...OC, and BO = OE, § 128 (being homologous sides of equal A). QED Ex. 13. The median from the vertex **to the base of an isosceles triangle is perpendicular to the base,** and bisects the vertical angle. Ex. 14. If two straight lines are cut by a transversal so that the... | |
| Charles Austin Hobbs - Geometry, Plane - 1899 - 266 pages
...angle of 45°. Ex. 27. To divide an angle into four equal parts. Ex. 28. The median from the vertex **to the base of an isosceles triangle is perpendicular to the base,** and bisects the vertical angle. Ex. 29. .4BCand DBC are isosceles triangles on the same base ; prove... | |
| George Albert Wentworth - Geometry - 1899 - 496 pages
...OC, and BO = OE, § 128 (being homologous sides of equal &). QED Ex. 13. The median from the vertex **to the base of an isosceles triangle is perpendicular to the base,** and bisects the vertical angle. Ex. 14. If two straight lines are cut by a transversal so that the... | |
| Arthur Schultze, Frank Louis Sevenoak - Geometry - 1902 - 394 pages
...Ex. 117. If the opposite sides of a quadrilateral are equal, the opposite angles are equal. Ex. 118. **The median to the base of an isosceles triangle is perpendicular to the base. Ex.** 119. If a quadrilateral has two pairs of equal adjacent sides, the angles included by the unequal sides... | |
| Arthur Schultze - 1901 - 260 pages
...Ex. 117. If the opposite sides of a quadrilateral are equal, the opposite angles are equal. Ex. 118. **The median to the base of an isosceles triangle is perpendicular to the base. Ex.** 119. If a quadrilateral has two pairs of equal adjacent sides, the angles included by the unequal sides... | |
| Arthur Schultze, Frank Louis Sevenoak - Geometry - 1901 - 394 pages
...Ex. 117. If the opposite sides of a quadrilateral are equal, the opposite angles are equal. Ex. 118. **The median to the base of an isosceles triangle is perpendicular to the base. Ex.** 119. If a quadrilateral has two pairs of equal adjacent sides, the angles included by the unequal sides... | |
| Arthur Schultze, Frank Louis Sevenoak - Geometry - 1901 - 396 pages
...Ex. 117. If the opposite sides of a quadrilateral are equal, the opposite angles are equal. Ex. 118. **The median to the base of an isosceles triangle is perpendicular to the base. Ex.** 119. If a quadrilateral has two pairs of equal adjacent sides, the angles included by the unequal sides... | |
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