Show:
Geometry
Types of Angles
Lines
Anatomy of Angles
Angle Relationships
100
A location in space.
What is a point?
100
An angle that is 90 degrees.
What is a right angle?
100
A portion of a line that includes two points and all the points in between.
What is a line segment?
100
Two rays that share a common endpoint.
What is an angle?
100
Angle A is 34 and angle B is 56.
What are complementary angles?
200
To have the same size, shape, and measure.
What is congruent?
200
An angle that is 87 degrees.
What is an acute angle?
200
The points where the line segment ends.
What are endpoints?
200
A portion of a line that begins at a point and extends infinitely in one direction (also, sides of an angle).
What is a ray?
200
Angle A is 85 and angle B is 95.
What are supplementary angles?
300

These lines are the same distance apart and never touch.

What are parallel lines?

300
An angle that is 112 degrees.
What is an obtuse angle?
300
A straight continuous arrangement of an infinite number of points.
What is a line?
300
The common endpoint that two rays share.
What is a vertex?
300
These angles share a side and a vertex.
What are adjacent angles?
400

These lines cross at any degree except 90 degrees.

What are intersecting lines?

400
An angle that is 180 degrees.
What is a straight angle?
400
The point at which two or more lines cross.
What is an intersection?
400
To draw this, first measure the angle, then divide by two.
What is an angle bisector?
400
The noncommon sides of these angles form a line.
What is a linear pair?
500

These solids have the same size faces and are all regular polygons.

What a Platonic Solid?

500

Angle CAT is 195 degrees. What kind of angle is it?

What is a reflex angle?

500
When two lines intersect to form a 90 degree angle.
What is perpendicular?
500
This is the instrument you would use to measure an angle.
What is a protractor?
500
These angles share a vertex, but not a side. They are formed by two intersecting lines.
What are vertical angles?