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In this video, let's make an interesting observation.

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We have seen that if you have a right angle triangle and the sides are B, C and then B Square is equal

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to A squared plus C square, where B is the hypotenuse, which is the side opposite the right angle.

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All right.

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Now let's take an acute angle triangle.

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Remember, an acute angle triangle is a triangle where every angle is an acute angle.

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All right.

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Over here, the sides of this triangle triangle is A, B and C, and you will find that B Square is

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less than A squared plus C square.

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Let's compare that with the relation over here.

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Over here.

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B Square is equal to a square square over here.

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B squared will be less than is square square.

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All right.

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Now let's take an obtuse angle triangle.

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Besides A, B and C and B is the greatest site over here, and you will find that the greatest site

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is the site opposite the greatest angle or the site opposite the obtuse angle.

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This angle will be an obtuse angle.

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The side opposite the obtuse angle will be the greatest site.

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Now, in this obtuse angle triangle, you will see that this square is greater than a square.

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Let's see square to over here.

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In the case of a right angle, Triangle B Square is equal to Equivalencies Square.

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The case of an acute angle.

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Triangle B Square is less than Esquibel Square, and in the case of an obtuse angle, triangle B square

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is greater than is square.

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Plus C Square is an interesting observation.

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Let's take a triangle with sites for five and ten and say you want to find out whether this triangle

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is a right angle triangle, an acute angle triangle or an obtuse angle triangle.

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Let's take the biggest site, which is ten to ten square is gives you one hundred and four squared plus

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five square.

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That's sixteen plus twenty five.

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Right.

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How much is that.

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That's forty one.

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Right.

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So you can see that under is greater than forty one.

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Therefore it satisfies this criteria over here and hence we can conclude that a triangle with sides

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or five and ten is an obtuse angled triangle.