Regular and Irregular Figures
A figure bounded by line segments is a regular figure.
Figures bounded by curved lines are called irregular
figures.
The space enclosed by the line segments is called the area of a figure.
For example:
Given below is a square bounded by four line segments each of length 1 cm.
The area of the square of sides 1 cm is 1 square cm (sq. cm) or centimetre2 (cm2)
What is the area of a square of sides 3 cm?
The above square consists of 9 small squares of area 1 sq.
cm each.
Therefore, the area of square ABCD is 9 sq.cm (cm2)
Note: Square cm or centimetre2 is the unit of area.
You might like these
In simple closed curves the shapes are closed by line-segments or by a curved line. Triangle, quadrilateral, circle, etc., are examples of closed curves.
Worksheet on polygons are important to practice so that students can solve the polygon related questions easily in the 4th grade. A simple closed figure made up of line segments is called a polygon. A polygon having four sides are called quadrilaterals. A square is a
A simple closed curve or a polygon formed by three line-segments (sides) is called a triangle. The above shown shapes are triangles. The symbol of a triangle is ∆. A triangle is a polygon with three sides. In the given figure ABC is a triangle. AB, BC and CA are its sides.
Representation of a fraction is discussed here. In a simple fraction, there is a horizontal line. Above this line we write a number which is called the numerator. Below this line we write another number which is called the denominator.
In worksheet on perimeter of a figure, all grade students can practice the questions on measurement of length. This exercise sheet on perimeter can be practiced by the students to get more ideas to learn to find the perimeter of a figure. 1. Find the perimeter of each of the
In circle math the terms related to the circle are discussed here. A circle is such a closed curve whose every point is equidistant from a fixed point called its centre. The symbol of circle is O. We have learned to draw a circle, by tracing the outlines of objects like a
Symmetrical shapes are discussed here in this topic. Any object or shape which can be cut in two equal halves in such a way that both the parts are exactly the same is called symmetrical. The line which divides the shape is called the symmetry. So, if we place a mirror
Worksheet on closed curves and open curves questions are here for the students to practice simple shapes. 1. Draw an alphabet which forms a closed figure. 2. Draw a number which forms a closed figure which is not simple. 3. Draw a number which forms a simple closed figure
Worksheet on symmetrical shapes we will solve different types of questions. Fourth grade students can practice this geometry worksheet on symmetrical shapes to get the basic ideas on symmetrical
We will discuss here about constructing a line segment. We know how to draw a line segment of a certain length. Suppose we want to draw a line segment of 4.5 cm length.
4th Grade Math Worksheets
Math Homework Sheets
From Regular and Irregular Figures to HOME PAGE
Didn't find what you were looking for? Or want to know more information
about Math Only Math.
Use this Google Search to find what you need.
Share this page:
What’s this?
|
|
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.