Question

Q4 Write down order of rotation and angle of rotation for the following given figure
(a) Equilateral Triangle​

Answer 1

Answer:

Question 1: Name any two figures that have both line symmetry and rotational symmetry.

Answer: Square, circle

Question 2: Draw, wherever possible, a rough sketch of

A triangle with both line and rotational symmetries of order of more than 1.

Answer: Equilateral triangle

A triangle with only line symmetry and no rotational symmetry of order more than 1.

Answer: Isosceles triangle

A quadrilateral with rotational symmetry of order more than 1 but not a line of symmetry.

Answer: Parallelogram

A quadrilateral with line symmetry but not a rotational symmetry of order more than 1.

Answer: Kite

Question 3: If a figure has two or more lines of symmetry, should it have rotational symmetry of order more than?

Answer: Yes

Question 4: Fill in the blanks:

Answer:

Shape Centre of rotation Order of rotation Angle of rotation

Square Intersection point of diagonals 4 90°

Rectangle Intersection point of diagonals 2 180°

Rhombus Intersection point of diagonals 2 180°

Equilateral triangle Intersection point of medians 3 120°

Regular hexagon Intersection point of diagonals 6 60°

Circle Centre Infinite Any angle

Semicircle Centre 1 360°

Step-by-step explanation:

Answer 2

Answer:

order of rotation is 3

angle of rotation is 120degrees