Embed Size (px)
Citation preview
GeometryPoint
Line
Line segment
Ray
Plane
Parallel lines
Intersecting lines
Angles
Basic Geometric Ideas
PointAn exact location in space
LineAn endless collection of points along a straight path
Line segmentPart of a line that has two endpoints
.A
Geometry
RayPart of a line that has one endpoint and extends endlessly in the other direction
PlaneAn endless, flat surface that is named by any three points not on the same line.
.A.B .C
Geometry
Parallel LinesLines do not intersect but are in the same plane
Intersecting LinesLines meet at one point
Perpendicular LinesLines form a right angle
Angles
An angle is formed when two rays have the same endpoint.
This endpoint is called the vertex.
The two rays that form the angle are called sides.
Angles
There are four types of anglesRight angle
Straight angle
Acute angle
Obtuse angle
Right Angles
Forms a square corner
Forms a 90 degree angle.
Use a corner of your index card to make sure you a have a right angle
90 degrees
Straight Angle
Forms a straight line
Angle is 180 degrees
Use the edge of your index card to make sure you have a straight angle.
180 degrees
Acute Angles
Forms an angle that is less than a right angle
Angle is less than 90 degrees
Obtuse Angles
Form an angle that is more than a right angle
Angle is more than 90 degrees
ReviewName each picture
Ray
Parallel lines
Line
1.
2.
3.
ReviewName each picture
Acute angle
Line segment
Point
4.
5.
6.
ReviewName each picture
Intersecting lines
Perpendicular and Intersecting lines
Plane
