QR is tangent to circle P at point Q.

Circle T has diameters RP and QS. The measure of ∠RTQ is 12° less than the measure of ∠RTS.

is tangent to circle P at point Q.

Angles PTQ and STR are vertical angles and congruent.





In circle A, ∠BAE ≅ ∠DAE.

In circle A, ∠BAE ≅ ∠DAE.

In circle D, ∠EDH ≅ ∠EDG.

In circle T, ∠PTQ ≅ ∠RTS.

Circle D is shown with the measures of the minor arcs.

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