Pizza is one of the most loved foods around the globe. But did you notice the shape of a pizza slice? This shape is a triangle. What do we mean by triangle? A triangle is a closed figure formed by three straight lines. It is made up of three angels and three vertices. The sum …
Place your left palm over your right palm. Now closely observe. All fingers of your left palm are as same as your right palm. Such an exact similarity is referred to as the ‘property of Congruence’ in geometry. The property of congruence can be studied by closely observing different shapes and figures. In this chapter, …
Previously, we had learned how to construct an angle, along with the bisectors. In this chapter, we take you a step further into understanding how geometrical tools can be used to construct geometrical shapes and figures. To begin with, you will be introduced to the concept of a Triangle. Moving forward, you will uncover some …
Can you answer the following questions: How big is the surface of your house? Or how big is our country? In order to understand the surface that is occupied by a specific item, it becomes necessary to find its area. An area of an item is the size of the surface that it has occupied. …
Open a notebook, and carefully observe the right-hand side and the left-hand side of it. You will observe that both parts are exactly the same. We can say they are symmetrical. Now there is a dividing line between the left side and the right side, that’s called the axis of symmetry. If you observe carefully …
Can you tell us the difference between a rectangular drawing and a rectangular box? If you are thinking that both are one and the same, then you are wrong. A rectangular drawing is a 2D shape because it has two important factors – i.e the length and the breadth. Whereas a rectangular box is a …
Look closely at the minute and the hour hand of the wall clock. You will observe that both these hands make an angle between them. What is the angle? An angle in Geometry is a shape, formed by two lines or rays diverging from a common point. They help us to figure out the degree …
The objects we see around us come in different shapes and sizes. These shapes are formed using curves and lines. Any shape includes various details, for example – a vertice at the corner, a plane on which it forms, etc. But, how do we know mathematically if a shape is smaller or bigger? To identify …
Did you know that the distance between the earth and the sun is approximately 149.12 million kilometres? This is interesting, but what is more interesting is how do scientists calculate this distance? Did they travel? The answer is with the help of the concept of ‘Mensuration’. It is a branch of mathematics concerned with ascertaining …
Take a piece of paper and draw an image of a butterfly. You will definitely draw it in such a way, that both sides of the butterfly will be an exact replica of each other. If you fold one-half of the butterfly on the other, they will exactly overlap each other. Such figures with evenly …
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