Line p is parallel to line q. Which proof explains why the sum of the interior angles of the triangle must be 180° ?

Sat no calculator section question in the picture

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.

If you are in grade when should you start studying for exams