Question

help!!

Answer 1

hope you know that 71+19 =90 so what mean this ?

Answer 2

for angle RQT

Answer 3

and you need to know again that an acute angle is an angle with measure less than 90 degrees and an obtuse angle is an angle with measure greatest than 90 degrees

and an angle with measure equal 90 degrees is a right angle

Answer 4

hope helped