Common Core Aligned Resources for HSG-C.A.2
Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.
Showing 1 - 30 of 79 resources
Angles Outside a Circle: Lesson
3 mins 6th - 12th CCSS: Adaptable
Understand the difference in finding angle measures. A segment of an extensive geometry playlist introduces the formula to find the measure of an angle formed outside of a circle. Using examples, the video shows how to calculate measures...
Inscribed Angles in Circles: Lesson
6 mins 9th - 12th CCSS: Adaptable
Circle the angles and intercept the arcs. The video introduces three theorems relating to inscribed angles in circles. Using drawings, the segment of a playlist on geometry illustrates the measure of angle along with theorems about two...
Inscribed Quadrilaterals in Circles: Lesson
2 mins 9th - 11th CCSS: Adaptable
Find supplementary information about inscribed angles. A section of a large geometry playlist introduces the relationship of angles in an inscribed quadrilateral. The presentation works through examples that use the relationship between...
How Do You Find the Center of a Circle?
4 mins 9th - 12th CCSS: Adaptable
The center of the circle is the center of attention for the resource. A brief video in the Socratica Geometry playlist shows how to find the center of a circle not on the coordinate plane. The method here is to construct the...
Inscribing and Circumscribing Right Triangles
9th - 12th CCSS: Designed
High schoolers attempt an assessment task requiring them to find the radii of inscribed and circumscribed circles of a right triangle with given dimensions. They then evaluate provided sample responses to consider how to improve their...