Class 9 Maths
Introduction to Euclid’s Geometry
Question 1:
Solve the equation a – 15 = 25 and state which axiom do you use here?
Question 2:
Ram and Ravi have the same weight. If they each gain weight by 2 kg, how will their new weights be compared?
Question 3:
If A, B and C are three points on a line, and B lies between A and C as shown in
figure, then prove that AB + BC = AC.
Question 4:
If a point C be the mid-point of a line segment AB, then write the relation among AC, BC and AB.
Question 5:
How many lines do pass through two distinct points?
Question 6:
In the given figure, if AB = CD, then prove that AC = BD. Also, write the Euclid’s axiom used for proving it.
Question 7:
Define: (a) Square (b) Perpendicular lines
Question 8:
In the given figure, name the following:
(i) Four collinear points
(ii) Five rays
(iii) Five line segments
(iv) Two-pairs of non-intersecting line segments.
Question 9:
In the given figure, AC = DC and CB = CE. Show that AB = DE. Write the Euclid’s axiom to support this.
Question 10:
Define each of the following terms
i. Angle ii. Line segment iii. Radius of a circle
Question 11:
What is Euclid’s fifth postulate?
Question 12:
Mohan and Sohan have the same weight. If they each gain weight by 2 kg, how will their new weights be compared?
Question 13:
The Euclidean geometry is valid only for figures in the _______.
Question 14:
Euclid’s fourth axiom says that _______.
Question 15:
Axioms are assumed
(a) Theorems
(b) Definitions
(c) Universal truths specific to geometry
(d) Universal truths in all branches of mathematics
Question 16:
Which of the following needs a proof?
(a) Definition
(b) Postulate
(c) Theorem
(d) Axiom
Question 17:
It is known that if x + y = 10 then x + y + z = 10 + z. Euclid’s axiom that illustrates this statement is
(a) First Axiom
(b) Second Axiom
(c) Third axiom
(d) Fourth Axiom
Question 18:
“Lines are parallel if they do not intersect” is stated in the form of
(a) Definition
(b) Proof
(c) Postulate
(d) Axiom
Question 19:
The things which are double of the same thing are
(a) equal
(b) unequal
(c) double of the same thing
(d) halves of the same thing
Question 20:
Which of the following statements are true?
(a) Only one line can pass through a single point.
(b) There is an infinite number of lines which pass through two distinct points.
(c) A terminated line can be produced indefinitely on both the sides
(d) If two circles are equal, then their radii are unequal.
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All About Daily Practice Problems on Class 9 Maths Introduction to Euclid’s Geometry NCERT Chapter 5
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