Geometrymedium · Past Paper
In the figure, O is the center. ABCD is a cyclic quadrilateral. If angle ABC = 95 degrees, what is the value of angle ADC?
A85 degrees
B95 degrees
C180 degrees
D265 degrees
✓ Correct Answer: A — 85 degrees
Opposite angles of a cyclic quadrilateral are supplementary. 180 - 95 = 85.
Share this question
More from Geometry
- The area of a triangle with vertices (a, 0), (0, b), and (0, 0) is:
- Two triangles are similar by SAS criterion if:
- If the slope of the line joining (x, 2) and (3, 4) is 1, find x.
- The equation y = 3 represents a line:
- How many common tangents can be drawn to two non-intersecting circles that are far apart?