## RS and ST are 2 sides of a regular 12-sided polygon. RT is a diagonal of the polygon. Work out the size of angle STR. You

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## Answers ( )

Answer:Step-by-step explanation:Answer:15°

Step-by-step explanation:The exterior angle at vertex S is 360°/12 = 30°. That angle has a measure that is equal to the sum of the congruent angles at R and T of ΔRST. In other words, …

∠T = 30°/2 = 15°

The size of angle STR is 15°.