Which relationship is always true for the angles r, x, y, and z of triangle abc?
select one:
a. x + z = y
b. 180 degrees − x = r
c. x + y + z = 180 degrees
d. x + y + z = 90 degrees

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.