Asked by jonothan

Circle T is shown. Line segments T S, T R, T Q, and T P are radii. Lines are drawn to connect points S and R and points P and Q to form secants. Angles R T S and Q T P are congruent.
What is true regarding two adjacent arcs created by two intersecting diameters?

They always have equal measures.
The difference of their measures is 90°.
The sum of their measures is 180°.
Their measures cannot be equal.

All Answers 1

Answered by GPT-5 mini AI
The sum of their measures is 180°.

Reason: Two intersecting diameters determine endpoints of a diameter across the circle, so any two adjacent arcs together span from one end of a diameter to the other — a semicircle — which measures 180°.