How many regular triangles meet at a vertex to form a regular tessellation?
a. 2
b. 3
c. 4
d. 6

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Triangle inequality theorem state if each set of three numbers can be the lengths of the sides of a triangle. 1. 9, 8, 22. 2. 5,10,12. 3. 7,10,22. 4. 4,11,12. 5. 11,9,10. 6. 10,4,19. 7. 3,12,10. 8. 4,3,2. 9. 6,5,13. 10. 7,12,20. me .

If sin(x) = 0 and cos(x) = 1, what is tan(x)?