The measure of the obtuse angle is the i saucily’s triangle is 2 1/2 times the measure of one base angle right and solve a system of linear equations to find the measures of all the angles

Let o represent the obtuse angle, and let the base angle be represented by b. Then you have
.. o = 2.5b
.. o +2b = 180
Substituting the first equation into the second, you have
.. 2.5b +2b = 180
.. 4.5b = 180
.. b = 180/4.5 = 40
.. o = 2.5*40 = 100

The obtuse angle is 100°; the base angles are 40°.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.