26. Which undefined term has no dimension?
a. point
b. line
c.ray
d. angle

27. What geometric figure that has no thickness, but has length and width since it extends indefinitely in all directions?
a. plane
b. angle
c.rays
d. rays

28. The common endpoint of two non-collinear rays is called
a. point
b. Vertex
c.sides
d. angle

29. What is the union of two non-collinear rays with a common endpoint?
a. ray
b. plane
c. line
d.angle

pahelp guys please​