9 The diagram shows a shape with rotational symmetry of order 2
50 cm,
1.8
13
20 cm
20 cm
70
NOT TO
SCALE
70 cm
1.3 m
1.8
50
Work out the perimeter of the shape.
Give your answer in centimetres.

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Sum of the interior angles of a pentagon

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.