Question:
What is the maximum number of obtuse angles that a quadrilateral can have?
(a) 1
(b) 2
(c) 3
(d) 4
Solution:
(c) We know that, the sum of all the angles of a quadrilateral is 360°.
Also, an obtuse angle is more than 90° and less than 180°.
Thus, all the angles of a quadrilateral cannot be obtuse.
Hence, almost 3 angles can be obtuse.