Inscribed and Circumscribed Circle

What is the center of the circle circumscribed about this triangle?

• (6, 3)

• (9, 5)

• (6, 5)

• (7, 4.5)

What is the center of the circle circumscribed about this triangle?

• (-1, 1)

• (1, 2)

• (0.5, 1)

• (-5, 1)

The circumcenter is the center of the circumscribed circle.

• true

• false

Find measure of angle R.

• 24

• 41

• 67

• 139

When you draw the angle bisectors of a triangle it creates the point of concurrency called the _____________.

• Centroid

• Incenter

• Circumcenter

• Orthocenter

Name the pictured construction.

• Circled Hexagon

• Hexagon Inscribed in a Circle

• Square Inscribed in a Circle

• Triangle Inscribed in a Circle

To inscribe a hexagon inside a circle, which length should you set your compass to?

• The radius

• The diameter

• Half of the radius

• It depends on the size of the circle

To inscribe a square inside a circle, first you must draw a chord anywhere across the circle. What should your next step be?

• Construct a perpendicular bisector

• Draw a second diameter to the circle

• Construct a line tangent to the circle

• Set your compass the length of the radius.

The steps shown are a part of the construction of which figure?

• inscribed square

• circumscribed rectangle

• inscribed equilateral triangle

• regular hexagon

Name the construction pictured

• Inscribed circle about a nonagon

• Inscribed hexagon

• Inscribed circle about a triangle

• Circumscribed obtuse triangle