The angle of rotation of a figure is obtained by dividing 360° by order of rotational symmetry.
True
False
A figure not having rotational symmetry can have 3 lines of symmetry.
True
False
If a figure is folded in two equal parts such that the two folds overlap each other exactly, then the figure is symmetrical and the crease so formed is the line of symmetry.
True
False
A capital letter and its corresponding small letter have an equal number of lines of symmetry.
True
False
If a figure possesses rotational symmetry, then it should look exactly the same at least once up to a rotation of 180°.
True
False
Every triangle has 3 lines of symmetry.
True
False
The shape and size of a figure does not change after rotation.
True
False
The mirror line is also known as invariant point.
True
False
Click the correct answer.
Which of the following have four lines of symmetry?
Parallelogram
Rhombus
Rectangle
Square
What is the order of rotational symmetry of a figure which does not have rotational symmetry?
0
1
2
Not defined
What is the name of a figure having 1 line of symmetry and whose order of rotational symmetry is also 1?
Parallelogram
Rhombus
Semicircle
Scalene triangle
What is the order of rotation of a line segment?
4
3
1
2
Which is equivalent to a 60° clockwise rotation?
60° anticlockwise rotation
120° anticlockwise rotation
300° anticlockwise rotation
360° anticlockwise rotation
How many lines of symmetry does a regular hexagon have?
4
5
6
0
What is the possible angle of rotation of a figure having rotational symmetry of order greater than 1?
26°
72°
200°
360°
Click the correct answer.
While opening the cap of a bottle, the direction of rotation
.
is anticlockwise
is clockwise
cannot be determined
is moving a figure parallel to itself along a line.
Translation
Rotation
Reflection
If after a rotation of 45° about a point the figure looks exactly the same, then the order of rotation is
.
8
6
10
Number of lines of symmetry of an isosceles right-angled triangle is
.
1
2
0
The angle of rotation of a figure which fits on to itself 3 times in a complete revolution is
.
