Books Books If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it ; the angle contained by these two sides is a right angle. The Elements of Euclid [book 1] for beginners, by J. Lowres - Page 39
by Euclides - 1852 ## Report of the examination held (Dec. 1859)-73

Cowley Oxon, dioc. school - 1860 - 318 pages
...figure are to. gether equal to four right angles. 4. If the square described upon one of the sides of a triangle be equal to the squares described upon the other two sides of it, the angle contained by these two sides is a right angle. 5. If a straight line be divided into... ## Report of Her Majesty's Civil Service Commissioners: Together ..., Volume 18

1874 - 750 pages
...of its angles equal to a. given rectilineal augle. 4. If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sider of it; the angle contained by these two sides is a right angle. 5. Describe a square on a given... 