Find the 14th term of the geometric sequence 10, 20, 40,

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35

What is the difference between regular convex and concave polygons

What is the measure of the smallest angle in the diagram? 15 29 32 45