Answer:
that means all the other sides are x-45 and each of the angles are 60 degrees
(i dont know what your asking for)
24 is the answer you are looking for
40 is an acute angle.
30 is an acute angel.
110 is an obtuse angle.
The easiest way to remember is anything below 90° (which is a right angle) is acute (think, cute = small). Anything above 180° is obtuse.
The last one is the answer, it basically has the answer on there anyway, because there are 5 people and two are boys.