Introduction to Euclid's Geometry

A solid has ______ dimension(s).

• Zero

• infinite

• two

• three

Euclid’s second axiom (as per order given in the Textbook for Class IX) is

• The things which are equal to the same thing are equal to one another.

• If equals be added to equals, the wholes are equal.

• If equals be subtracted from equals, the remainders are equals.

• Things which coincide with one another are equal to one another.

What is a line segment?

• A set of points that goes on forever in both directions
• A curved line that goes on in one direction forever
• A part of a line between two endpoints

Euclid’s fifth postulate is

• The whole is greater than the part.

• A circle may be described with any centre and any radius

• All right angles are equal to one another.

• 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.

If AB & DE intersect at C, and if AC = DC and CB = CE , the which of the following relation is correct?

• AC = BE

• CD= BC

• AC = CE

• AB = DE