The formula to find the measure of an interior angle is

, where

represents the number of sides in the polygon. In this problem,

would represent

.
Let's plug in the value for


Let's simplify that.

Now we know that the <span>measure of an interior angle of a regular three-sided polygon is 60</span>°.
Your answer would be B!Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Manny can assemble a computer in 50 minutes. That means, in a minute Manny does

job.
Lucy can assemble a computer in 45 minutes. That means, in a minute Lucy does

job.
If they are working together, in a minute they will do:



In a minute they will do

job
To finish the job they will do it in
minutes or about 24 minutes.
Answer:
1.17
Step-by-step explanation:
5-(2.18+1.65)