1.1. Basic Geometric Definitions http://www.ck12.org
Use geometric notation to explain each picture in as much detail as possible.
5.
For 6-15, determine if the following statements are ALWAYS true, SOMETIMES true, or NEVER true.
- Any two distinct points are collinear.
- Any three points determine a plane.
- A line is composed of two rays with a common endpoint.
- A line segment has infinitely many points between two endpoints.
- A point takes up space.
- A line is one-dimensional.
- Any four distinct points are coplanar.
−→
ABcould be read “rayAB” or “rayBA.”
14.←→
ABcould be read “lineAB” or “lineBA.”- Theorems are proven true with postulates.
In Algebra you plotted points on the coordinate plane and graphed lines. For 16-20, use graph paper and follow the
steps to make the diagram on the same graph.
- Plot the point (2, -3) and label itA.
- Plot the point (-4, 3) and label itB.
- Draw the segmentAB.
- Locate pointC, the intersection of this line with thex−axis.
- Draw the ray
−→
CDwith pointD( 1 , 4 ).