Euclid

Euclid, also known as  Euclid of Alexandria, was a Greek mathematician, often referred to as the "Father of Geometry".

He was active in Alexandria during the reign of Ptolemy I (323–283 BC).

Euclid also wrote works on perspective,conic sections, spherical geometry, number theory and rigor.

"Euclid" is the anglicized version of the Greek name Εὐκλείδης, meaning "Good Glory".

Euclid

His Elements is one of the most influential works in the world , serving as the main textbook for teaching mathematics (especially geometry) from the time of its publication until the late 19th and early 20th century.

In the Elements, Euclid deduced the principles of what is now called Euclidean geometry from a small set of axioms.

theory

The parallel postulate: "That, if a straight line

falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.

QUIZ5. Two acute angles which have their sides parallel

are:

i) complementary

ii) equal,

iii)supplementary

iv) none of the above.

Correct answer is ….

ii !!!!!!!!