Learn and know **what is a triangle**? And how to explain **triangle definition **in geometry. In types of polygons triangle is the first one. Basically what is the **meaning of the triangle**?

If we divide the word triangle into two parts i.e. “**tri**” and “**angle**”. The meaning of “tri” is three and the meaning of “angle” already we know. So totally triangle means we say three angle measurements. Up to know we discussed the **meaning of a triangle**, after this we will discuss about its **definition**. We can say the **Triangle definition** in so many different ways. All these explanations will be in a simple sentence. So it is easy to remember. Now we will see what are that **definitions**.

**Triangle definition as follows:**

A **triangle** can be explained as “if a polygon is bounded with three line segments then it is called a **triangle**”. One more definition for a triangle is “a simple closed figure bounded by three line segments is called a **triangle**”. If you want to explain **triangle definition** in a simple way we say that “a closed figure with three vertices and three edges is called a **triangle**”.

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