RD Sharma 2020 solution class 9 chapter 9 Introduction To Euclid Geometry MCQS

MCQS

Page-9.9

Question 1:

Euclid belongs to the country
(a) Babylonia
(b) Egypt
(c) Greece
(d) Rome

Answer 1:

Euclid belongs to the country Greece.

Hence, the correct answer is option (c).

Question 2:

Thales belongs to the country
(a) Babylonia
(b) Egypt
(c) Greece
(d) Rome

Answer 2:

Thales belongs to the country Greece.

Hence, the correct answer is option (c).

Question 3:

Pythagoras was a student of
(a) Thales
(b) Euclid
(c) Both (a) and (b)
(d) Archimedes

Answer 3:

Pythagoras was a student of Thales.

Hence, the correct answer is option (a).

Question 4:

Which of the following needs a proof?
(a) Theorem
(b) Axiom
(a) Definition
(d) Postulate

Answer 4:

Theorem needs a proof. Theorems are statements which are proved using definitions, axioms, previously proved statements and deductive reasoning.

Hence, the correct answer is option (a).

Question 5:

Euclid stated that all right angles are equal to each other in the form of
(a) an axiom
(b) a definition
(c) a postulate
(d) a proof

Answer 5:

Euclid stated that all right angles are equal to each other in the form of a postulate. Euclid's postulate 4 states that all right angles are equal to one another.

Hence, the correct answer is option (c).

Question 6:

'Lines are parallel if they do not intersect' is stated in the form of
(a) an axiom
(b) a definition
(c) a postulate
(d) a proof

Answer 6:

'Lines are parallel if they do not intersect' is stated in the form of a definition. Definition of parallel lines is lines are parallel if they do not intersect.

Hence, the correct answer is option (b).