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No!

A triangle has three points on it, and the sum of the exterior angles will always be greater than 180 degrees.

As a simple test, draw three dots in a triangle form, and join them up. Using a protractor, add the angles. This will be more 190degrees.

If you now place three dots in a straight line labelling them dots a, b, and c, and now join them up. The angle from the line between dots a-b, to the line between dots b-3 is 180degrees.

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13y ago

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You can say sum of all exterial angle of triangle 180 degrees.

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13y ago
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yes

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12y ago
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Q: Is an exterior angle of a triangle always 180 degrees?
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