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No, never. Two angles are complementary angles if their measures sum to 90 degrees. An obtuse angle has a measure in the range (0, 90) degrees so two of them cannot sum to 90 degrees.
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Two angles are complementary when they add up to exactly 90 degrees. An obtuse angle is by definition greater than 90 degrees. Therefore, an obtuse angle cannot have a complementary angle. So an obtuse angle and an acute angle are never complementary.
yes
Complementary angles are acute angles. An angle that measures 104 degrees is an obtuse angle and therefore cannot have a complement.
name two obtuse vertical angles.
yes an obtuse triangle has two acute angles