6. Point:
a single, exact location in space
A point is represented with dot
and label with a letter.
This is how we represent Point A
A .
7. Line:
A straight path that is made of
endless points in both directions
A line is represented by connecting two
labeled points with an arrow on each end.
Add a second labeled point (B)
A
. .
B
This is how we represent Line AB
8. Line Segment:
Part of a line that extends from
one point to another point
A line segment is represented by
connecting two labeled points
A
. .
B
This is how we represent Line AB
9. Parallel lines or line segments:
A pair of lines on the same plane that are the
same exact distance apart and never intersect
(meet)
A___________________B
C___________________D
Line segment AB and line segment CD are the
same distance apart. They will never intersect
10. Ray:
Part of a line, having only one point
A
This is ray A, written as A
12. Angle:
Two rays that have the same
point of origin or vertex
Ray AB and ray AC form angle BAC
C
A B
13. Angle:
There are three types of angles,
Acute, Obtuse, and Right angles.
Acute angles
Measure: between
0 and 89 degrees
Obtuse angles
Measure: between 91
And 179 degrees
Right Angles
Measure: 90 degrees
37. Symmetric Figures:
A shape that can be folded in half
(along the line of symmetry)
So that the two halves line up exactly.
Fold along the dotted line
38. Symmetric Figures:
A shape that can be folded in half
(along the line of symmetry)
So that the two halves line up exactly.
Other examples of symmetric figures
40. Circles:
• Circumference: the distance around a
circle(perimeter)
• Diameter: a line that goes through the
center of a circle
• Chord: a straight line joining two points on
the circumference of a circle
• Radius: the distance from the center to any
point on the circumference of a circle.
41. Circles:
• Circumference: the distance around a
circle(perimeter)
42. Circles:
• Diameter: a line that goes through the
center of a circle
43. Circles:
Chord: a straight line joining two points on
the circumference of a circle
44. Circles:
Radius: the distance from the center to any
point on the circumference of a circle.
46. Space Figures: (Solids)
A figure that has volume,
three dimensions.
Faces: flat surfaces of solids
Edges: lines where two faces meet
Vertices: the corners or points of a
solid.