(a) 1000(b) 90(vi) Write the following equations in . C) parks, t What do people do when they Lose so much blood That they become unconscious How many triangles can you make with side lengths of 3mm, 7mm, and 4.69mm? Solution To find vertical angles, look for angles formed by intersecting lines. Then, 4x + 5x = 180 {the sum of two adjacent angles of a parallelogram is supplementary} 9x = 180. From the Base Angles Theorem, the other base angle has the same measure. So, FCD BCE 160 1. Measuring angles is pretty simple: the size of an angle is based on how wide the angle is open. Hennepin County Sheriff Number Of Officers, Test. And then the vertical angle, the one that sits on the opposite side. 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