Tag: euclid's postulates

Questions Related to euclid's postulates

The mathematical statements that are proved are called axioms.

  1. True

  2. False

  3. cannot be determined

  4. None of the above


Correct Option: B
Explanation:

False, statements that are proved are theorems.

A proof is required for :

  1. Postulate

  2. Axiom

  3. Theorem

  4. Definition


Correct Option: C
Explanation:

Axiom/Postulate — a statement that is assumed to be true without proof. These are the basic building blocks from which all theorems are proved. 


Theorem — a mathematical statement that is proved using rigorous mathematical reasoning.  In a mathematical paper, the term theorem is often reserved for the most important results.
  
So, the correct option is $C$ as a theorem needs a proof.

A lemma is a proven statement used for proving another statement.

  1. True

  2. False


Correct Option: A
Explanation:

'Lemma ' is a subsidiary or intermediate theorem in an argument or proof.

A theorem is:

  1. an assumption

  2. always true

  3. always false

  4. sometimes true and sometimes false


Correct Option: B
Explanation:

A theorem is a Statement (logic) that has been proved on the basis of previously established statements, such as other theorems, and generally accepted statements.
A theorem is based on assumption that theorem is true.


Example: In a Euclidean space, the sum of measures of the three angles of any triangles is invariably equal to the straight angle, also as $180^o$

Complete the sentence with the most suitable option:
She wishes she _________ younger than she is.

  1. Were

  2. Would be

  3. Had been

  4. Is


Correct Option: A

Complete the sentence with the most suitable option:
I wish we _____________ late for this film. I can't follow the story.

  1. Didn't arrive

  2. Hadn't arrived

  3. Wouldn't arrive

  4. Wouldn't have arrived


Correct Option: B

Complete the sentence with the most suitable option:
I wish our school __________ a bigger library than it has.

  1. Had had

  2. Would have

  3. Had

  4. Will have


Correct Option: C

Complete the sentence with the most suitable option:
If only you _________ less noise.

  1. Had made

  2. Made

  3. Would make

  4. Might make


Correct Option: B

Complete the sentence with the most suitable option:
He wished his father ______________ him some shoes before the new term starts.

  1. Was buying

  2. Was going to buy

  3. Would buy

  4. Had bought


Correct Option: C

Complete the sentence with the most suitable option:
A: Janet couldn't come to the concert last night.
B: I wish she _______________.

  1. Is able to come

  2. Was able to come

  3. Could have come

  4. Had come


Correct Option: C