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Practice each question, then open the answer or worked solution.
In the following figures, the figure that is not symmetric with respect to any line is:
(A) (i) (B) (ii) (C) (iii) (D) (iv)
Solution:-
(B) (ii)
A figure is said to have line symmetry if, by folding the figure along a line, the left and right parts of it coincide exactly. The line is called the line (or axis) of the symmetry of the figure.
The number of lines of symmetry in a scalene triangle is
(A) 0 (B) 1 (C) 2 (D) 3
Solution:-
(A) 0
A scalene triangle is a triangle that has three unequal sides.
Therefore, there are no lines of symmetry in a scalene triangle.
The number of lines of symmetry in a circle is
(A) 0 (B) 2 (C) 4 (D) more than 4
Solution:-
(D) more than 4
Which of the following letters does not have a vertical line of symmetry?
(A) M (B) H (C) E (D) V
Solution:-
(C) E
Which of the following letters have both horizontal and vertical lines of symmetry?
(A) X (B) E (C) M (D) K
Solution:-
(A) X
Which of the following letters does not have any line of symmetry?
(A) M (B) S (C) K (D) H
Solution:-
(B) S
Which of the following letters has only one line of symmetry?
(A) H (B) X (C) Z (D) T
Solution:-
(D) T
The instrument to measure an angle is a
(A) Ruler (B) Protractor (C) Divider (D) Compasses
Solution:-
(B) Protractor
An instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge.
The instrument to draw a circle is
(A) Ruler (B) Protractor (C) Divider (D) Compasses
Solution:-
(D) Compasses
The instrument to draw a circle is a compass.
Number of set squares in the geometry box is
(A) 0 (B) 1 (C) 2 (D) 3
Solution:-
(C) 2