Measure of the triangle

x= 30

Why? 180-120= 60 and 60/2 is 30
(You use 180 because all interior angles of a triangle add up to 180)

Hope this helps

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When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.