∠ABD and ∠BDE are supplementary. Find the measures of both angles.

Mathematics

1 answer:

Gnom [1K]4 years ago

5 0

Supplementary means that the angles have to add up to 180, so you have your equation.

180=5x+17x-18

198=22x

x=9

Then to find the measures of the angles, you plug x back in.

m∠ABD=5(9)=45 degrees

m∠BDE=17(9)-18=153-18=135 degrees

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