Im confused on how to understand circle properties

Circles having equal radii are congruent.

Circles having different radii are similar.

The central angle which intercepts an arc is the double of any inscribed angle that intercepts the same arc (proof).

The radius perpendicular to a chord bisects the chord.

The chords equidistant from the center are equal in length.

Step-by-step explanation:

Circles having equal radii are congruent.

Circles having different radii are similar.

The central angle which intercepts an arc is the double of any inscribed angle that intercepts the same arc (proof).

The radius perpendicular to a chord bisects the chord.

The chords equidistant from the center are equal in length.

no problobm

step-by-step explanation:

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.