Lines
Line Segments
Rays
Types of Angles
Find the Complementary or Supplementary Angle
100
This is a set of points that travel in a straight line forever in either direction.
What is a line?
100
This is a part of a straight line that is defined by two distinct endpoints.
What is the definition of a line segment?
100
This is a line that has only one fixed endpoint that extends infinitely in one direction.
What is a ray? What is an example of a ray?
100
This is an angle that measures less than 90 degrees.
What is an acute angle?
100
This is the angle that, when added to the original angle, equals 90 degrees
What is its complementary angle?
200
These have 2 end points and they are considered to be sections of the line.
What are line segments?
200
This is when you find the distance between the endpoints on a line segment.
How do you calculate the length of a line segment?
200
There is only one of these on a ray.
How many endpoints does a ray have?
200
This kind of angle has a measure of exactly 90 degrees.
What is a right angle?
200
These are defined as two angles whose sum is 90 degrees
What are complementary angles?
300
A line segment is a section of a line that has 2 defined endpoints.
What is the definition of a line segment?
300
This is how we would explain what a line segment would be like in our world.
What is a real-world example of a line segment?
300
This is when these are primarily used to form angles.
How are rays mostly used in geometry?
300
An obtuse angle differs from other angles by being larger than a right angle (90 degrees) but smaller than a straight angle (180 degrees)
What is an obtuse angle and how does it differ from other angles?
300
These kind of angles, when added together, equal 180 degrees.
What are supplementary angles?
400
Parallel lines are the same distance apart from one another and will never intersect.
What are the properties of parallel lines?
400
This is when you add together the endpoints on a line segment, then divide by 2 to find this part of the line segment; it is shown as: x1 + x2 / 2
How do you find the midpoint of a line segment?
400
To show this on a coordinate plane, plot the starting point (endpoint) as a solid dot, then draw a line extending infinitely in the desired direction with an arrow at the end to indicate that it continues forever in that direction .
How can you represent a ray on a coordinate plane?
400
This kind of angle has two rays that make up the angle that are in the same position on opposite sides of a point.
What is a straight angle and what is an example of a straight angle?
400
The amount of this angle equals 135 degrees.
What is the supplementary angle to a 45 degree angle?
500
These are lines that meet or cross each other in a plane in only one spot.
What are intersecting lines? How can you describe them?
500
This is when you are trying to find how far between endpoints that one endpoint is from the other.
What is the distance formula used to find the length of a line segment between two points?
500
In geometry, this is formed when two of these share a common endpoint, called the vertex, meaning that they are the fundamental components that create an angle.
What is the relationship between rays and angles?
500
This is a tool used to measure angles in degrees that is typically shaped like a semi-circle and has markings from 0 to 180 degrees along its edge
What is a protractor and how can you identify the type of angle by using one?
500
When two angles are complementary and one angle is twice the other, we write the expression as:
<a + <2a = 90 degrees.
If two angles are complementary and one angle is twice the other, what are the measures of both angles?
a + 2a = 90
3a = 90; 3a/3 = 90/3
a = 30 degrees