1a. A regular polygon has 10sides. i)Name the polygon.
ii)How many triangles can be obtained from this polygon if cut into triangles.
iii)Find the sum of its interior angles.
iv)A polygon which has n sides is cut into triangles, write formula to find the sum of its interior angles in terms of n.

b)A student cycles 3km east from A to B and then 4km to C. Find the distance and bearing from C from A. scale: 1cm to 1km. tan60° =1.7.

2a. Find the height h, of the building if the scale is 1cm to 10km.

b)Find x, 2x and 3x from the diagram below.
2x+ 3x +82°+128°= 360°.Copy and complete.