Angle
In geometry, an angle is the space between two straight lines that meet at a single point.
Think of it as the amount of turn between two lines, like the hands of a clock or the corner of a room.
The Parts of an Angle
Every angle has three main parts:
Vertex: The point where the two lines meet.
Arms: The two straight lines that shoot out from the vertex.
Degrees: The angel used to measure how wide open the angle is.
Four Main Types of Angles
Angles change names based on how wide open they are:
Angle Type
What it looks like:
Acute: Sharp, like a slice of pizza less than 90 degrees.
Right Angle: Perfect square corner, like a letter "L", exactly 90 degrees
Obtuse: Wide open, like an open laptop, between 90 and 180 degrees.
Straight Angle: A perfectly flat line
Exactly 180 degrees
Definition Summary
An angle is formed when two lines meet at a shared point, measuring the turn between them.
Think of it as the amount of turn between two lines, like the hands of a clock or the corner of a room.
The Parts of an Angle
Every angle has three main parts:
Vertex: The point where the two lines meet.
Arms: The two straight lines that shoot out from the vertex.
Degrees: The angel used to measure how wide open the angle is.
Four Main Types of Angles
Angles change names based on how wide open they are:
Angle Type
What it looks like:
Acute: Sharp, like a slice of pizza less than 90 degrees.
Right Angle: Perfect square corner, like a letter "L", exactly 90 degrees
Obtuse: Wide open, like an open laptop, between 90 and 180 degrees.
Straight Angle: A perfectly flat line
Exactly 180 degrees
Definition Summary
An angle is formed when two lines meet at a shared point, measuring the turn between them.