The sector of a circle with start angle 90 and sweep angle 180 consists of the left half of the circle.

Question

Quizplus · Accepted Answer

The start angle of 90 and sweep angle of 180 means that the sector begins at the point on the right side of the circle where a line drawn from the center of the circle intersects the circle at a 90 degree angle, and covers half of the circle (180 degrees). Since the sector begins on the right side and covers half the circle, it must consist of the left half of the circle.

The Sector of a Circle with Start Angle 90 and Sweep