Back to Construct regular polygons in circle — Problem 2 · Task Set 13

Exercises: Construct Regular Polygons Inscribed in a Circle

Grade 9·18 problems·~28 min·Common Core Math - HS Geometry·standard·hsg-co-d-13

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Warm-Up

$Triangle OAB inside a circle, with all three sides labeled r showing it is equilateral$

Triangle $OAB$ is drawn with center $O$ and two adjacent hexagon vertices $A$ and $B$ on a circle of radius $r$ . All three sides equal $r$ . What type of triangle is $OAB$ ?

Scalene

Isosceles

Equilateral

Right