Student find the area of a sector of a circle. In this geometry lesson, high schoolers  define the sector of a circle using a sketch. They find and identify examples of sector in the real world.

Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...

Sstudents explore and analyze the properties of geometric areas.  In this geometry lesson plan, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles and compare and...

Students identify different parts and properties of circles. In this geometry lesson, students identify the radius, diameter, semicircle and inscribed angle of a circle. They identify the tangent lines to a circle.