Math Geometry Help

Math Geometry Help

Need help with the following problems. The attached document has the pictures for the questions. I need to see all of the work to get the answer.
3. Suppose that a circle is divided into three congruent arcs by points A, B, and C.
What is the measure of each arc? What type of figure results when A, B, and C are
joined by segments?
4. For the five-pointed star (pentagram), inscribed in the circles, find the measures of ∠1 and ∠2.
6. is the common chord of ⊙O and ⊙Q. If AB = 12 and each circle has a radius of length 10, how long is ?
7. If explain why ΔSTY is an isosceles triangle.
Attachments
4253057-Help.docx

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