Question

1) a quadrilateral having angles of 60 , 80 , 100 , 120 is : a) convex b) concave c) cyclic d) parallelogram 2) rhe sum of all interior angles of a concave quadrilateral is : a) more than 360 b) 360 c) less than 360 d) none of these

Answer 1

c ) it is a cyclic
b) is a correct

Answer 2

quadrilateral is con vex and cyclic.
sum of interior angles of concave quadrilateral is 360