All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure<span> of the angles, we know that the </span>sum<span> of all the angles is 1080 degrees (from above)... And there are eight angles... So, the </span>measure<span> of the interior angle of a regular </span>octagon<span> is 135 degrees</span>
Answer:
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Step-by-step explanation:
Answer:
4x + 1 = 9
Step-by-step explanation:
3x + 12 -12 = 18 - 12 ---> 3x = 6 ---> x = 2.
Since x = 2, 4x + 1 is the same as (4 * 2) + 1.
(4 * 2) + 1 = 9.
D is the answer to your question