Geometry

1
Geometry
Mathematical study of space and objects in space.
2
Basic Concepts
3
Coordinate Grid
4
Protractor
5
Compass
6
LINES
7
Line Segment
8
Ray
9
Line
10
Parallel Lines
11
Perpendicular Lines
12
ANGLES
13
(0lt m?a lt 90)
a
Acute Angle
14
(90lt m?a lt 180)
a
Obtuse Angle
15
(m?a 90)
a
Right Angle
16
(m?a 180)
a
Straight Angle
17
(180lt m?a lt 360)
a
Reflex Angle
18
POLYGONS
19
Polygon
vertex
side
interior
A closed 2-dimensional figure whose sides are
connected but do not cross.
20
Regular Polygon
A polygon whose sides are all the same length and
angles are equal.
21
What type of polygon is this?
Concave
22
Convex
23
Hexagon
6 - gon
24
Quadrilateral
4 - lateral
25
Decagon
10 - gon
26
Pentagon
5 - gon
27
Heptagon
7 - gon
28
Octagon
8 - gon
29
Triangle
3 - angle
30
Nonagon
9 - gon
31
TRIANGLES
32
Isosceles
2 sides of the same length
33
Scalene
3 different length sides
34
Equilateral
3 equal length sides (and angles)
35
Right
1 right angle
36
Acute
All angles are acute
37
Obtuse
1 obtuse angle
38
Quadrilaterals
39
Polygons
Squares
40
Parallelogram
Opposite sides are parallel
41
Rhombus
Parallelogram whose sides are all equal
42
Rectangle
Parallelogram whose angles are all equal (90)
43
Square
Parallelogram whose angles and sides are all
equal. All squares are rectangles and rhombuses.
44
Trapezoid
A quadrilateral with exactly one pair of parallel
sides.
45
Kite
A quadrilateral with two pairs of adjacent (next
to each other) equal sides .
46
CIRCLES
47
radius
diameter (twice the radius)
arc
center
Circle
48
3-D FiguresGeometric Solids
49
vertex
face
edge
base
Triangular Prism
A solid whose base is a triangle.
50
base
vertex
edge
face
Rectangular Prism
A solid whose base is a rectangle.
51
Cube
A rectangular prism in which all sides are equal
(they are squares.)
52
base
face
Cylinder
A solid whose base is a circle.
53
base
apex
Cone
A solid with a circular base, a curved surface,
and an apex.
54
apex
base
Pyramid
A solid with a polygon base, and all other faces
are triangles that come together at an apex.
55
center
circumference
Sphere
The set of all points in space that are the same
distance from the center (3-d.)
56
Transformations
Operation on a figure that produces another
figure.
57
Line of Symmetry
A line drawn through a figure that divides it
into two parts that look exactly alike, but are
facing in opposite directions.
58
Congruent
Having the same size and shape.
59
Similar
Having the same shape, but not necessarily the
same size.
60
Reflection
The flipping of a figure over a line (mirror
image.)
61
Rotation
The turning of a figure around an axis or a fixed
point.
62
Translation
The sliding of a figure.
63
Thats all folks!