Geometry Flashcards
What is a point? (3)
A precise location or place on a plane. Usually represented by a dot. And indicated with capital letters.
What is a line?
- A line does not have an endpoint.
* It stretches infinitely in tow directions.
What do the arrows on a line indicate?
The line continues
How do we name a line?
We name or indicate a line using two points on the line.
What is a line segment?
A line segment is only part of the line. It has a starting point and an end point.
What is a ray?
A ray only has one starting point but continue infinitely in one direction.
What is a flat surface?
A flat area which is never ending in all directions. We can also call this a plane.
What are parallel lines? And what else do they have?
Distinct lines that lay in the same plane and never intersect each other. Their own slope.
What is a perpendicular line?
A perpendicular line is a line that intersects at right angles.
How many lines are required for intersection?
Two or more
The common point where all lines meet is called the ______ of _______.
Point
Intersection
All intersecting lines form_____ at the point of intersection.
Angles
What formula must you remember when measuring angles? And what does it stand for?
ROLI
Right Outside Left Inside
Acute angle is….
Less than 90 degrees
A right angle is….
= to 90 degrees
