Mathematics
In quadrilateral ABCD, ∠D = 40°, ∠C = 80° AP bisects angle A and BP bisects angle ∠B; then ∠APB is equal:
90°
120°
90°
60°
Related Questions
The angles of a quadrilateral are in the ratio in the ratio 2 : 5 : 7 : 4. The largest angle is:
40°
100°
140°
80°
In quadrilateral ABCD, ∠A = 45°, ∠B = 55° and ∠D = 60°; the quadrilateral is:
concave
convex
right angled
none of these
The sum of interior angles of a polygon is 900°. The number of side in this polygon is:
5
7
9
11
Calculate the sum of angles of a polygon with 10 sides: