Öffnen – Winkel Berechnen 7 Klasse
Angle addition postulate: The measure of an angle formed by adding two other angles is the sum of the measures of the angles that are being added.
Exercise 1: Find the value of x.
Since we are given that m°AOB + m°BOA = m°AOC, we can set up the equation:
m°AOB + m°BOA = m°AOC
x + (x + 40) = 180
2x + 40 = 180
2x = 180 – 40
2x = 140
x = 70
Exercise 2: Find the value of x.
Since we are given that m°AOB + m°BOA = m°AOC, we can set up the equation:
m°AOB + m°BOA = m°AOC
x + (x – 30) = 150
2x – 30 = 150
2x = 150 + 30
2x = 180
x = 180 / 2
x = 90
