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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

## Elements of geometry, containing the first two (third and fourth ..., Part 1

Euclides - 1871 - 136 pages
...the segments of the base. PROPOSITION XLVIII. THEOREM. 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 those sides is a right angle. £ 0 Let the sq. on BC, a side of A ABC,...

## The Elements of Euclid, containing the first six books, with a selection of ...

Euclides - 1874 - 342 pages
...right-angled triangle, &c. QED PROPOSITION 48.— Theorem. 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. Let the square described upon BC, one...

## Recent military, naval, and civil service examination papers in mathematics ...

Braithwaite Arnett - 1874 - 130 pages
...of its angles equal to a given rectilineal angle. 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. B 5. Describe a square on a given...

## Pure mathematics, Volume 1

Edward Atkins - 1874 - 424 pages
...right-angled triangle, &c. Q- ED Proposition 48. — Theorem. 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. Let the square described upon BC, one...

## The Teachers' assistant and pupil teachers' guide, Volume 1

1876 - 400 pages
...meet the two lines will be bisected in that point. 2. 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. ALGEBRA.— 1. Find the value of (2...

## The Pupil teacher, a monthly educational journal. H. Major, ed

Henry Major - 1876 - 784 pages
...the same straight line are parallel to each other. 2. 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. What is the converse proposition ?...

## Examination Christmas,1875

Education Department,London - 1876 - 1010 pages
...triangle EOD is one sixth of the whole triangle ABC. 2. 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. AC, AD is drawn perpendicular to BC....

## Elements of geometry, based on Euclid, books i-iii

Edward Atkins - 1876 - 130 pages
...right-angled triangle, &c. QED Proposition 48. — Theorem. If the square described vpon 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. Let the square described upon BC, one...