https://www.khanacademy.org/math/ap-statistics/analyzing-categorical-ap/stats-two-way-tables/v/two-way-relative-frequency-tables
Answer:
.
Step-by-step explanation:
1.equilateral
2.isosceles
3.isosceles
4.isosceles and right
5.scalene
6.scalene and right
7.isosceles and right
8.isosceles
9.equilateral
650
822-72=650