Line, Point and Rotational Symmetry

Front

What is a point in geometry?

Back

A point is a precise location or position in a two-dimensional or three-dimensional space, represented by a dot and having no size or dimension.

Front

What is a line in geometry?

Back

A line is a straight one-dimensional figure that extends infinitely in both directions, having no endpoints.

Front

What is line symmetry?

Back

Line symmetry, or reflection symmetry, occurs when a shape can be divided into two identical halves that are mirror images of each other along a line.

Front

What is rotational symmetry?

Back

Rotational symmetry is when an object can be rotated around a central point and still look the same at certain angles.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

Which letter has line symmetry? A, B, C, D

Back

B has line symmetry.

Front

What is the line of symmetry for a square?

Back

A square has four lines of symmetry: two vertical, one horizontal, and one diagonal.

Front

What is the difference between line symmetry and rotational symmetry?

Back

Line symmetry involves reflection across a line, while rotational symmetry involves turning an object around a point.

Front

How many degrees can a shape with rotational symmetry of order 4 be rotated to look the same?

Back

A shape with rotational symmetry of order 4 can be rotated by 90 degrees.

Front

Which of the following letters has no line symmetry? A, H, M, N

Back

N has no line symmetry.