Jonah tore the angles off a large paper triangle. Then he arranged the three paper angles with their points together so that there were no gaps and no overlaps. What kind of angle did Jonah form? A. acute angle

B. right angle

C. obtuse angle

straight angle

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)