Class 9 Maths Practice Test: Euclid’s Geometry - Equivalent Versions of Euclid’s Fifth Postulate — Flashcards | Class 9 Math | FatSkills

Class 9 Maths Practice Test: Euclid’s Geometry - Equivalent Versions of Euclid’s Fifth Postulate — Flashcards

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Equivalent Versions of Fifth Postulate: If a straight line falling on two straight lines makes the interior angles on the same side of it taken together less than two right angles, then the two straight lines, if produced indefinitely, meet on that side on which the sum of angles is less than two right angles.

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When the sum of the measures of the interior angles on the same side of the falling line is greater than 180 degree, then the two straight lines, if produced indefinitely, meet on that side on which the sum of angles is greater than 180 degree.
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