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If the sides of a triangle are produc...

If the sides of a triangle are produced in order, then the sum of the three exterior angles so formed is `90^0\ ` (b) `180^0` (c) `270^0` (d) `360^0`

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Exterior angle of a triangle = (sum of two opposite interior angle)
Sum of all three exterior angle =` (/_A + /_B) + (/_B + /_C) + (/_C + /_A)
= 2 ( /_A + /_B + /_C)
= 2 * 180^@
= 360^@`
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