Which of the following statement are false? o vertical angles are congruent. o angles with measures between 0 and 90 are complementary. o straight angles are supplementary. o angles with measures between 90 and 180 are obtuse

1. Vertical angles are congruent. This is true.

2. Angles with measures between 90 and 0 degrees are complementary. Assuming this means that two angles add to a sum of 90, this is true.

3. Straight angles are supplementary. Since a straight angle is only one angle, it is not supplementary, even though it is 180 degrees. This is false.

4. Angles with measures between 90 and 180 degrees are obtuse. This is true.