How do i find upper and lower quartile
please help will give brainliest

Can any one me with the answers to these questions asap?

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

The reflexive property of congruence lets you say that ∠pqr ≅