Geometry Tom and Clément

2. points that are on the same line
4. Something that is used to measure angles
7. a section that connects the vertex of a triangle to the midpoint of its opposite side
8. a polyhedron with a base which is a polygon and all other faces triangles meeting at a common vertex
9. half the diameter of a circle
12. The sum of all the lengths of a plane shape
14. the space between two intersecting lines
15. an angle smaller than 90 degrees
16. a triangle which has two equal sides

1. a plane with 12 sides
3. a transformation that moves a figure by flipping it across a line
5. a statement created by a Greek mathematician that is used in a right angled triangle
6. the perimeter of a circle
10. the point of intersection of two edges or sections
11. a point that divides a section into two equal lengths
13. a parallelogram with 4 equal sides