Mathematics and Measurement

Across

1. System of measurement used worldwide

4. Number after fourteen and before sixteen

5. Extent of protection or reporting provided

6. Three times as much or many

10. First letter of the Greek alphabet

11. Self evident truth in mathematics

12. Quantity described by magnitude only

13. Place where something is located

Down

2. Two score plus a zero

3. Zero value in a math problem

7. Proportion between two quantities

8. Dramatic scene or vivid picture display

9. Spore producing organism often found on bread