Complementary means sum of 90.
90-67=23
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An angle that measures 180 degrees would be in a straight line. Therefore, this angle is known as a straight angle.
The 3rd angle is 30 degrees which would form an obtuse or scalene triangle.
One that measures 8 degrees would.
Generally, that would be a protractor. It is able to take an angle and calculate its degrees.
An angle would only be a right angle if it was equal to 90 degrees. Anything less than that would be an acute angle and anything more would be obtuse.