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two angles join to form a 80 degree angle the first angle measures 45° what is the measure of the second angle

two angles join to form a 80 degree angle the first angle measures 45° what is the-example-1
User Rtev
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1 Answer

16 votes
16 votes

ANSWER

The measure of the second angle is 35º

Step-by-step explanation

By the angle addition postulate, we know that if two angles form a bigger angle, the measure of the bigger angle is the sum of the measures of the two angles:


m\angle ABC=m\angle ABD+m\angle DBC

For this problem we have:


80º=45º+x

Where x is the missing angle:


\begin{gathered} x=80º-45º \\ x=35º \end{gathered}

two angles join to form a 80 degree angle the first angle measures 45° what is the-example-1
User Johanwannheden
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