Step-by-step explanation:
since an isosceles triangle has two sides equal and the sum of the angles add up to 180°.
then let the two equal sides be x.
therefore, 133° + x + x=180
¶ 2x=180°-133°
¶ 2x= 47
¶ x= 47/2
¶ x= 23.5
therefore the measure of one side is 23.5°
