problem: Among a group of athletes, 40% play basketball, 20% play soccer, and the rest play tennis. There are 20 tennis players. How many athletes are in the whole group?

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle