The fall of the Western Roman Empire typically. represents the beginning of the Middle Ages. Scholars divide the Middle Ages into. three eras: the Early Middle Ages (4 00â1000), the High Middle Ages (1 000â1300), and. the Late Middle Ages (1 300â1500).
For any triangle it is universal truth that addition of all three angles will be one eighty degree (1800). Mathematically, it can be expressed as: â p + â q + â r = 180Â°, If we are given two angles out of three then substituting these values, one angle can be calculated using above formula.
Problem: Suppose that we are given triangle ABC such that: Solution: We know that the sum of the angles must be 180 degrees. Since angles A and B already add up to 120 degrees, this leaves 60 degrees for angle C. Using algebra, this can be represented by: A + B + C = 180. 40 + 80 + C = 180.