standard_description: 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.
problem_activity: Task
Three unit squares and two line segments connecting two pairs of
vertices are shown. What is the area of $\triangle ABC$?
[IMG]


aligns: no