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

Question

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 must show your working.

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Gianna 3 months 2022-02-05T11:37:09+00:00 2 Answers 0 views 0

Answers ( )

  1. Cora
    0
    2022-02-05T11:38:20+00:00
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    Answer:

    Step-by-step explanation:

  2. Caroline
    0
    2022-02-05T11:38:44+00:00
    Reply

    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°.

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