Find unknown sides and angles embedded in diagrams, using the properties of special triangles and quadrilaterals, giving reasons

1.		What's In The Box? - perimeter of a rectangle; Pythagoras
2.		Oh...Sunny Day! - perimeter of a circle; pythagoras
3.		Ancient Angles - calculate size of base angles in isosceles triangle, angle sum of a triangle
4.		ABCs 1 - triangle geometry, equal angles opposite equal sides
5.		ABCs 4 - geometric reasoning - angles on parallel lines
6.		ABCs 3 - geometric reasoning - angles on parallel lines
7.		Tricky Triangles 4 - calculate reflex angle of equilateral triangle
8.		Tricky Triangles 3 - calculate size of angles in isosceles triangle, angle sum of a triangle, reflex angles
9.		Shape Up! 13 - calculate angle size, parallel line properties
10.		Shape Up! 11 - calculate angle size, angle sum of a triangle
11.		Shape Up! 10 - calculate angle size, supplementary angels, angle sum of a triangle
12.		Shape Up! 9 - angle sum of a triangle, exterior angles, revolution
13.		Shape Up! 8 - calculate angle size; parallel lines, triangles
14.		Shape Up! 6 - triangle geometry, equilateral and isosceles
15.		Shape Up! 5 - calculate angle size, angle sum of a triangle
16.		Shape Up! 3 - identify equal angles
17.		Shape Up! 1 - exterior angles of a triangle