Problem 461.
Three Circles, Tangent, Right Angle, Center, Distance, Measurement.

Problem 462.
Square, Arcs, 90 Degrees, Circle, Tangent, Radius, Measurement.

Problem 463.
Three Concentric Circles, Secant, Tangent, Triangle, Area.

Problem 464.
Square, Arcs, Center, Angle, 90 Degrees, 120 Degrees.

Problem 465.
Square, Arc, Angle, 90 Degrees, Measurement.

Problem 466.
Concentric Circles, Secant, Congruence, Measurement.

Problem 467.
Concentric Circles, Chord, Tangent, Congruence, Measurement.
Geometric Art.

Problem 468.
Circle, Chord, Midpoint, Congruence, Angle.

Problem 469.
Isosceles triangle, Midpoint, Transversal, Congruence.

Problem 470.
Triangle, Parallel, Side, Parallelogram, Area, Similarity.