Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books 1 - 10 of 58 on From this it is manifest that if one angle of a triangle be equal to the other two....  
" From this it is manifest that if one angle of a triangle be equal to the other two it is a right angle, because the angle adjacent to it is equal to the same two ; (i. "
Books 3-9 - Page 64
by Euclid, Sir Thomas Little Heath, Johan Ludvig Heiberg - 1908
Full view - About this book

A Royal Road to Geometry: Or, an Easy and Familiar Introduction to the ...

Thomas Malton - 1774 - 440 pages
...conf.theAng.A + ABC + BCA(eq.FBA+ABC+CBG) are equal to two Right Angles. - - - C. 3. Th. i. CnR. i. Hence, if one Angle of a Triangle be equal to the other two Angles, it is a Right one. For, if either Side, containing the Right Angle, be produced \ the external...
Full view - About this book

The Elements of Euclid, viz: The errors, by which Theon, or others, have ...

Robert Simson, Euclid - Trigonometry - 1775 - 520 pages
...angle of the left fegment is faid to be lefs, than a right angle.' CoR. From this it is manifeft, that if one angle of a triangle be equal to the other two, it is a right angle, becaufe the angle adjacent to it is equal to the fame two ; and when the adjacent...
Full view - About this book

The Elements of Euclid: in which the propositions are demonstrated ..., Book 11

Euclid - Geometry - 1776 - 264 pages
...in an lequilateral triangle is one third of two right angles, or two thirds of one right angle. 6. If one angle of a triangle be equal to the other two, that angle is a right one ; for, if the fide is produced, the adjacent angle is equal to the other...
Full view - About this book

The Elements of Euclid: in which the propositions are demonstrated in a new ...

Euclid - Geometry - 1776 - 264 pages
...in an ^equilateral triangle is one third of two right angles, or two thirds of one right angle. 6. If one angle of a triangle be equal to the other two, that angle is a right one ; for, if the fide is produced, the adjacent angle is equal to the other...
Full view - About this book

The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 520 pages
...angle of thelcfa ' fegment is faid to be lefs, than a right angle.' CoR. From this it is manifeft, that if one angle of a triangle be equal to the other two, it is a right angle, becaufe the angle adjacent to it is equal to the fame two ; and when the ad jacent...
Full view - About this book

The elements of Euclid: with dissertations intended to assist and ..., Volume 1

James Williamson - Mathematics - 1781
...wherefore the angle BAC is a right angle. Which was to be demonftrated. Cor From this it is manifeft that if one angle of a triangle be equal to the other two it is a right angle : for this reafon becaufe the adjacent angle is equal to the fame two : but (by...
Full view - About this book

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1781 - 466 pages
...angle of the lefs feg~ient is faid to be lefs .' than a right angle.' CoR. From this it is Tnanifcit, that if one angle of a triangle be equal to the other two, it is a right angle, becaufe the angle Adjacent to it is equal to the fame two ; and when the adjacent...
Full view - About this book

The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804
...angle of the lefs fegment is faid to be lefs * than a right angle.' CoR. From this it is manifeft, that if one angle of a triangle be equal to the other two, it is a right angle, becaufe the angle adjacent to it is equal to the fame two ; and when the adjacent...
Full view - About this book

The Elements of Euclid: viz. the first six books, together with the eleventh ...

Euclid, Robert Simson - Euclid's Elements - 1806 - 518 pages
...said to be greater, and the angle of the less segment * is said to be less, than a right angle.' CoR. From this it is manifest, that if one angle of a triangle be equal to the other two, it is a right angle, because the angle adjacent to it is equal to the same two ; and when the adjacent...
Full view - About this book

Elements of geometry: containing the first six books of Euclid, with a ...

John Playfair - Trigonometry - 1806 - 311 pages
...is greater than a right angle. Therefore, in a circle, Book in. &c. QED COR. From the demonstration it is manifest that if one angle of a triangle be equal to the other two angles, it is a right angle. PROP. XXXII. THEOR. IF a straight line touch a circle, and from the point...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download PDF