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Alternate Angles

Alternate Angles is a tautogram (all words start with the same letter). View more tautograms!
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Definition of the noun Alternate Angles

What does Alternate Angles mean as a name of something?


  1. [geometry] the internal angles made by two (parallel) lines with a third, on opposite sides of it.
    If the parallels AB, CD, are cut by the line EF, intersecting at points G and H, then the angles AGH, GHD, are called alternate angles (as also are the angles BGH and GHC).

Printed dictionaries and other books with definitions for Alternate Angles

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Google previewThe VNR Concise Encyclopedia of Mathematics (2012)

by S. Gottwald

Alternate angles: the arms of one are directed in the opposite sense to those of the other; for example, o = 'y', or y = x'. 3. Interior and exterior angles: the arms on the parallels are directed in the same sense and those on the intersecting lines ...

Google previewThe Facts on File Dictionary of Mathematics (2009)

by John Daintith, Richard Rennie

Alternate angles: alternate angles formed by a line cutting two parallel lines. annuity straight angle obtuse angle...

Google previewThe London encyclopaedia, or, Universal dictionary of science, art, literature, and practical mechanics, by the orig. ed. of the Encyclopaedia metropolitana [T. Curtis]. (1839)

by Thomas Curtis (of Grove house sch, Islington)

intersect two parallel lines, A B and C D, the alternate angles B E F, C F E will be equal to each other. If they are unequal, suppose B EF to be the greater, and that D E F is the part of it which is equal to C F E. Then, as A B is parallel to C D, ...

Google previewMathematical Dictionary and Cyclopedia of Mathematical Science (1872)

Comprising Definitions of All the Terms Employed in Mathematics - an Analysis of Each Branch, and of the Whole, as Forming a Single Science by Charles Davies

Alternate Angles. In elementary geometry, if two parallel straight lines are intersected by a third, the two inner angles, on opposite side of the cutting line, are cal led alternate interior angles : also, the two outer angles, on opposite sides of the ...

Google previewEncyclopaedia Britannica, Or a Dictionary of Arts, Sciences, and Miscellaneous Literature (1810)

If a straight line EF meet two parallel straight lines AB, CD, it makes the alternate angles AEF, EFD equal. LET EH and ...

Google previewThe Encyclopaedia Britannica, Or Dictionary of Arts, Sciences, and General Literature (1842)

G K Theorem XXI If a straight line EF meet two parallel Lines and straight lines AB, CD; it makes the alternate angles figures AEF, EFD equal. Let EH and GF be perpendicular to CD, then these lines will be parallel (18), and also at right angles ...

Google previewDictionary of Mathmatics (2010)

by Preadeep Sharma

Alternate angles (y*Mt Alternate angles are the angles made when two lines are crossed by Another straight line. Alternate.

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Alternate angles Meaning

Video shows what alternate angles means. the internal angles made by two (parallel) lines with a third, on opposite sides of it. If the parallels AB, CD, are cut by ...

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