Geometry Tom and Clément

5. a statement created by a Greek mathematician that is used in a right angled triangle
7. Something that is used to measure angles
9. a transformation that moves a figure by flipping it across a line
11. a plane with 12 sides
12. a section that connects the vertex of a triangle to the midpoint of its opposite side
13. half the diameter of a circle
15. the space between two intersecting lines
16. a parallelogram with 4 equal sides

1. the perimeter of a circle
2. The sum of all the lengths of a plane shape
3. an angle smaller than 90 degrees
4. the point of intersection of two edges or sections
6. points that are on the same line
8. a point that divides a section into two equal lengths
10. a polyhedron with a base which is a polygon and all other faces triangles meeting at a common vertex
14. a triangle which has two equal sides