Grade 7 - Shape and Space
Standard 7.SS.1 - Find the angle sum of interior angles of polygons.
Included Skills: Geometry
Demonstrate an understanding of circles including circumference and central angles. • Identify the characteristics of a circle. • Define and illustrate the relationship between the diameter and radius of a circle. • Answer the question "how many radii does a circle have and why?" • Answer the question "how many diameters does a circle have and why?" • Explain (with illustrations) why a specified point and radius length (or diameter length) describes exactly one circle. • Illustrate and explain the relationship between a radius and a diameter of a circle. • Generalize, from investigations, the relationship between the circumference and the diameter of a circle. • Define pi and explain how it is related to circles. • Sort a set of angles as central angles of a circle or not. • Demonstrate that the sum of the central angles of a circle is 360°. • Draw a circle with a specific radius or diameter with and without a compass. • Solve problems involving circles.