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 Βιβλία Βιβλία When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line which stands on the other is called a perpendicular to it. Euclid, books i. & ii., with notes, examples, and explanations, by a late ... - Σελίδα 1
των Euclides - 1879
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The text of Euclid's geometry, book 1, uniformly and systematically arranged ...

Euclides - 1884
...the one shall be equal to the angle contained by the two sides equal to them of the other. Definition 10. When a straight line standing on another straight...stands on the other is called a perpendicular to it. PROPOSITION XIII. THEOREM. The angles which one straight line makes with another straight line on one... ## An introduction to geometry, consisting of Euclid's Elements, book ..., Τόμος 1

Euclides - 1884
...When a straight line standing on another straight line makes the adjacent angles equal to each other, each of these angles is called a right angle; and...angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. 'Adjacent' means lying next to, from the... ## Mathematical Questions with Their Solutions: From the ..., Τόμοι 40-42

1884
...This again is capable of proof. The definition of a right angle is as follows : " When a straight bine standing on another straight line makes the adjacent...stands on the other is called a perpendicular to it." Let us then take two sets of such lines and apply one to tjie other, so that the feet of the perpendiculars... ## The Elements of Euclid, books i. to vi., with deductions, appendices and ...

Euclides - 1884
...line stands on another straight line, and makes the adjacent angles equal to each other, each of the angles is called a right angle ; and the straight...stands on the other is called a perpendicular to it. CUD Thus, if AB stands on CD in such a manner that the adjacent angles ABC, ABD are equal to one another,... ## Stewart's specific subjects. Euclid. [1st] (-3rd stage). [With 2 issues of ...

Stewart W. and co - 1884
...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is _ called a perpendicular to it. XI. An obtuse angle is greater than a right angle. XII. An acute angle... ## Mathematical Questions and Solutions, Τόμος 42

1885
...to one another." This again is capable of proof. The definition of a right angle is as follows : " When a straight line standing on another straight...stands on the other is called a perpendicular to it." Let us then take two sets of such lines and apply one to the other, so that the feet of the perpendiculars... ## Mathematical Questions and Solutions, from the "Educational Times ..., Τόμος 42

W. J. C. Miller - 1885
...to one another." This again is capable of proof. The definition of a right angle is as follows : ' ' When a straight line standing on another straight...stands on the other is called a perpendicular to it." Let us then take two sets of such lines and apply one to the other, so that the feet of the perpendiculars... ## Practical Arithmetic: By Induction and Analysis

Joseph Ray - 1885 - 336 σελίδες
...stands on another so that it makes with it two equal angles, each of Right angle. Hisht these angles is a RIGHT ANGLE; and the straight line which stands on the other is said to be PERPENDICULAR to it, or at RIGHT ANGLES to it. A/ obt«se /Acute 3. An OBTUSE ANGLE is greater... ## The First Six Books of the Elements of Euclid: And Propositions I-XXI of ...

Euclid, John Casey - 1885 - 312 σελίδες
...adjacent angles at both sides of itself equal, each of the angles is called a right angle, and the line which stands on the other is called a perpendicular to it. D Hence a right angle is equal to its supplement. xv. An acute angle is one which is less than a right... ## The first six books of the Elements of Euclid, and propositions i.-xxi. of ...

Euclides - 1885
...adjacent angles at both sides of itself equal, each of the angles is called a right angle, and the line which stands on the other is called a perpendicular to it. Hence a right angle is equal to its supplement. xv. An acute angle is one which is less than a right...