Mangahigh: Shape: Alternate Segment Rule for Circles

Interpret and apply the relationships between tangent and secant lines. The instructor explains the relationships of the angles and segments created by intersecting tangent and secant lines. 

Test your knowledge of the parts of a circle.

Determine the rules for radius and tangents of circles.

Determine the missing angle measures of quadrilaterals inscribed in circles.

Test your knowledge of base angles.

Determine the circumference of a circle or simple arc lengths.

Determine isosceles triangles inside a circle made from chords and radii.

Use theorems to prove ideas of inscribed and central angles in circles.

Use theorems to prove inscribed angles in circles.

High schoolers explore the concept of circles as they construct a circle using a program such as Cabri Jr. Learners construct a chord and a diameter that are perpendicular, then measure the bisected chord and notice that both sides of...