Math-2 column proofs

If <3 is congruent to <4,prove that <3 and <4 are right angles.

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  1. LOL, without a drawing there is no way. Perhaps they add up to a straight line?

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  2. Yes they do add up to a straight line with a bisector making each angle equal to 90 degrees

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  3. well then 90 degrees is 1/4 circle, straight line is 1/2

    1/4 = 1/2 of 1/2

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