And when the lines containing the angle are straight, the angle is called rectilineal.
Father of geometry
Found in 1 providers: grok
Cross Reference
1 source
"If a straight line fall on two parallel straight lines, it makes the alternate angles equal to one another, the exterior angle equal to the interior and opposite angle, and the interior angles on the …"
Strange & Unusual"A straight line is a line which lies evenly with the points on itself."
Shocking"A quantity is said to be a part of a quantity, the less of the greater, when it measures the greater."
Shocking"If equals be added to equals, the wholes are equal."
Strange & Unusual"If a straight line be cut in extreme and mean ratio, the greater segment is also cut in extreme and mean ratio by the lesser segment."
Shocking