Shape Centre of Rotation Order of Rotation Angle of Rotation Rectangle _____ _____ _____

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. We can see that, A Rectangle will look the same when it has been rotated by 180 ° . Hence, from the figure, the completed table will be as follows: Shape Centre of Rotation Order of Rotation Angle of Rotation Rectangle Intersection points of diagonals 2 180 °

Shape Centre of Rotation Order of Rotation Angle of Rotation Rhombus _____ ______ ______

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. We can see that, The rotational symmetry far a Rhombus can be drawn as shown below: Hence, from the figure, the completed table will be as follows: Shape Centre of Rotation Order of Rotation Angle of Rotation Rhombus Intersection points of diagonal 2 180 °

Shape Centre of Rotation Order of Rotation Angle of Rotation Equilateral Triangle _____ _____ _____

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. We can see that, The rotational symmetry of an Equilateral triangle can be drawn as: Hence, from the figure, the completed table will be: Shape Centre of Rotation Order of Rotation Angle of Rotation Equilateral Triangle Intersection points of median (centroid) 3 120 °

Shape Centre of Rotation Order of Rotation Angle of Rotation Regular Hexagon _____ _____ _____

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. Now, the rotational symmetry for a Regular Hexagon can be drawn as: Hence, from the figure, the completed table will be: Shape Centre of Rotation Order of Rotation Angle of Rotation Regular Hexagon Intersection points of diagonal 6 60 °

Shape Centre of Rotation Order of Rotation Angle of Rotation Circle _____ _____ _____

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. Now, the Rotational Symmetries of a Circle can be drawn as: Therefore, we can rotate circle in any angle of rotation and all shapes are symmetrical. Hence, from the figure, the completed table is as follows: Shape Centre of Rotation Order of Rotation Angle of Rotation Circle Centre of circle Infinite Any angle

Shape Centre of Rotation Order of Rotation Angle of Rotation Semi-circle _____ _____ _____

The rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle of turning during rotation is called the angle of rotation. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle and still look the same. Now, the rotational symmetry for a Semi-circle can be shown as follows: Hence, from the figure, the completed table will be: Shape Centre of Rotation Order of Rotation Angle of Rotation Semi-circle Any point in the plane of semi-circle 1 360 °

E M B I B E

MATHEMATICS Textbook for Class VII>Chapter 14 - Symmetry>EXERCISE 14.3

NCERT Solutions for Chapter: Symmetry, Exercise 3: EXERCISE 14.3

Author:NCERT

NCERT Mathematics Solutions for Exercise - NCERT Solutions for Chapter: Symmetry, Exercise 3: EXERCISE 14.3

Attempt the practice questions on Chapter 14: Symmetry, Exercise 3: EXERCISE 14.3 with hints and solutions to strengthen your understanding. MATHEMATICS Textbook for Class VII solutions are prepared by Experienced Embibe Experts.