17.1
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Lesson 17.1
Lines and Rays
Point Names an exact
point in space. Draw it (see left) Read it: Point A Write it: point A
A
line A straight path that
continues in both directions without end. It has no endpoints.
Draw it: Read it: Line KL Write it: KL
K
L
Line Segment Part of a line. It has
two endpoints and all the points between them. It is the shortest distance between two points.
Draw It: Read It: line
segment KL Write It: KL
K L
Ray A ray is part of a
line that has one endpoint and continues without end in one direction.
Draw It: Read It: Ray KL Write It: KL
K
L
Plane A flat surface of
points that continue without end in all directions. A plane is named by at least three points in the plane.
Draw It: Read It: plane ABC Write It: plane ABC
A
B
C
Draw
Line BCLine segment PQPoint GPlane RSTLine STRay XY
Draw
BYBYBYPoint BPoint YPlane BYU
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