Blacks and mulattos made up at least 19.3 % of the population of Santa Barbara. 1790. Blacks and mulattos constituted nearly 15% of the total San Francisco population and 18.5% of the settlers in Monterey. The population of Baja California included 844 Spanish-speaking persons of whom 183 were mulattos.
The same as the sum of angles of any quadrilateral. The sum of the angles only depends on the number of angles. If you want to visualize the sum of angles of a parallelogram, just draw one out and notice that there are two pairs of complementary angles, so the sum of the angles must be 360â.
Since all 4 angles in a parallelogram must add up to 360 degrees, the remaining two have to add up to 360-72-72, which leaves you with 216. So if those two add up to 216 and they are opposite and equal, each of those two must measure 108. Mark them. Now you have all 4 angles of the parallelogram itself. Draw your criss-cross lines from each corner to the opposite corner, which creates Angle ZWY, which they tell you is 80 degrees.