Question

name:_______________________ date:________
review
points, lines, and angles

write the letter for the correct term beside each definition.

1. ____ the point at which two lines intersect
2. ____ a set of points in a straight path that extends infinitely in both directions
3. ____ two lines that form a right angle at their point of intersection
4. ____ position in space, often represented by a dot
5. ____ a finite portion of a line that has two endpoints
6. ____ three or more points that lie in the same line
7. ____ a point that bisects a line segment
8. ____ lines in the same plane that never intersect
9. ____ a portion of a line that extends from one endpoint infinitely in one direction
10. ____ a flat surface that extends infinitely in all directions
11. ____ two rays that share an endpoint and extend in opposite directions to form a line
12. ____ something that relates to or resembles a line
13. ____ three or more points that lie in the same plane
14. ____ if three points are coplanar, then the line containing two of the points is in the same plane.

options:
a. opposite rays
b. point
c. ray
d. point of intersection
e. linear
f. midpoint
g. parallel lines
h. collinear points
i. perpendicular lines
j. line segment
k. line
l. plane
m. coplanar points
n. flat-plane rule

Explanation:

1. The point where two lines meet is the "point of intersection", so match with D.
2. A set of points in a straight path extending infinitely in both directions is a "line", so match with K.
3. Two lines forming a right angle at their intersection are "perpendicular lines", so match with I.
4. A position in space represented by a dot is a "point", so match with B.
5. A finite part of a line with two endpoints is a "line segment", so match with J.
6. Three or more points on the same line are "collinear points", so match with H.
7. A point that divides a line segment into two equal parts is a "midpoint", so match with F.
8. Lines in the same plane that never meet are "parallel lines", so match with G.
9. A part of a line extending from one endpoint infinitely in one direction is a "ray", so match with C.
10. A flat surface extending infinitely in all directions is a "plane", so match with L.
11. Two rays sharing an endpoint and extending in opposite directions to form a line are "opposite rays", so match with A.
12. Something related to or resembling a line is "linear", so match with E.
13. Three or more points in the same plane are "coplanar points", so match with M.
14. The statement about coplanar points and the line containing two of them being in the same plane is the "flat - plane rule", so match with N.

Answer:

1. D. point of intersection
2. K. line
3. I. perpendicular lines
4. B. point
5. J. line segment
6. H. collinear points
7. F. midpoint
8. G. parallel lines
9. C. ray
10. L. plane
11. A. opposite rays
12. E. linear
13. M. coplanar points
14. N. flat - plane rule