In isosceles triangles the angles at the base are equal to one another, and, if the equal straight lines be produced further, the angles under the base will be equal to one another.
Father of geometry
Proposition 5 (Pons Asinorum), Book I of 'Elements'
c. 300 BCE
Found in 1 providers: grok
Cross Reference
1 source
"To construct a square on a given straight line."
Strange & Unusual"In any triangle, if one of the sides be produced, the exterior angle is equal to the two interior and opposite angles, and the three interior angles of the triangle are equal to two right angles."
Strange & Unusual"The only purpose of the 'Elements' is to demonstrate mathematically certain fundamental propositions."
Shocking"To construct an equilateral triangle on a given finite straight line."
Strange & Unusual"And the whole is greater than the part."
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