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Let's do these three questions was the video, give it a try and then let's do it together.

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All right.

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Let's do it together.

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Each interior angle of a polygon is one hundred and eight degree.

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Find the number of sites of the polygon.

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Now, each candidate angle is one zero eight degrees.

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That means every indeed wrangling is equal right now.

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If there are insights, there will be any angles.

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Therefore, the sum of the angles is equal to one zero eight in two.

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And right now we also know that in the case where there are insights, the sum of the interior angles

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can be found using the formula and minus two in two 180.

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But these two are equal.

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That means one hundred and eight and is equal to 180 in the end minus two.

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Right.

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So that's one eight and minus 360.

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Let's simplify this.

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We get 360 is equal to seventy two in or and is equal to 360 by seventy two and that is equal to five.

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So the answer to this question is five.

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It's the Pentagon.

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What about question number two, the sum of the angles of a quadrilateral.

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That's a four sided figure.

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Right.

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So we know it's four minus two in the 180, which is equal to 180 in the two.

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And you get the answer as 360 degrees.

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That's option number C.

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Now, let's do the third question.

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What is the sum of all the angles of a hexagon, a hexagon is a six sided polygon, right?

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OK, so how many triangles can you form, you can form one, two, three, four, four triangles right

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there for the sum of the angles will be for into 180.

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That's equal to the same as in minus two in two 180 where N is equal to six.

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Right.

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But we have seen this also before that six minus two in the 180.

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So that's also four in the 180.

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And you get that as 720 degrees, which is option D.