triangle MNO is a right angled triangle . its legs are 6cm and 8cm long find the length of perpendicular NP on the side MO

Which of these choices show a pair of equivalent expressions?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Pls the last one and it has to be like number 6