| Henry Sinclair Hall - Geometry - 1924 - 267 pages
...from (i) to (ii) assumes that if XY : AB - XZ : AC then XY:XZ=AB: AC. THEOREM XV. If two triangles **have an angle of one equal to an angle of the other,** and the sides containing the equal angles proportional, then the triangles are similar. Given. ABC,... | |
| 1898
...and prove theorem for the lateral area of a regular pyramid. 5. Two triangles having an angle of the **one equal to an angle of the other are to each other** as the products of the sides including the equal angles. HISTORY OF EDUCATION. 1. What were the characteristics... | |
| |