Some lines cross circles twice, others touch them only once
CCSS.MATH.CONTENT.HSG.C.A.2Identify 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.
LTI launch URL
(help)
https://schoolyourself.org/page/lti/sy/geometry/circle-lines
