13. In circle A, secant EC and tangent BC intersect at C.

mEB = 166° and mBD = 80°

B

А.

С

What is mZBCD ?

The parking lot of a store has the shape shown. all angles are right angles. what is the area of the parking lot?

What’s the answer ? use the picture to see the problem

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.