An obtuse triangle has one angle measuring more than 90º but less than 180º (an obtuse angle). It is not possible to draw a triangle with more than one obtuse angle. Note: It is possible for an obtuse triangle to also be scalene or isosceles. An equiangular triangle has three congruent angles.
There were in total 96 pictures (84 pictures + 12 spoiled = 96 pictures). 1 roll of film has 24 pictures. x rolls of film have 96 pictures. 1 : 24 = x : 96 x = 1 * 96 : 24 x = 4