Table of Contents
180 Degree Angle
A 180-degree angle is an angle that is exactly half of a full circle. This means that it is equal to pi radians (180 / pi = 57.296 degrees).
What is an Angle?
An angle is a measure of the turn of a line. It is measured in degrees (°) and can be written as an angle symbol: θ. The measure of an angle is the length of the arc on the circumference of a circle that has the same endpoints as the angle.
Types of Angles
There are three types of angles: acute, right, and obtuse. An acute angle is less than 90 degrees, a right angle is 90 degrees, and an obtuse angle is greater than 90 degrees.
Table of Angles
A table of angles is a table that shows the different angles that can be created using a certain number of sides. The table will show the name of the angle, the measurement of the angle, and the number of degrees in the angle.
Straight Angle Examples
An example of a straight angle is a line segment that is perpendicular to another line segment.
The Theorem of Straight Line
A straight line is the shortest distance between two points.
What are the Properties of Straight Angles?
A straight angle is an angle that is 180 degrees. It is also called a right angle.
How to Draw a 180-Degree Angle with the Help of a Protractor
Draw a horizontal line on your paper. Place the protractor so that the 0 degree mark is aligned with the left edge of the paper, and the 90 degree mark is aligned with the right edge of the paper. Draw a vertical line intersecting the horizontal line. Where the lines intersect is the center of the angle. Place the protractor so that the 0 degree mark is aligned with the top edge of the paper, and the 180 degree mark is aligned with the bottom edge of the paper. Draw a vertical line intersecting the horizontal line. Where the lines intersect is the center of the angle.
How to Draw 180-Degree Angle with the Help of a Compass?
A compass can be used to draw a 180-degree angle. First, draw a straight line with the compass. Then, place the compass point at the end of the line and draw a semicircle. The 180-degree angle will be created where the line and semicircle intersect.
Drawing Angles Less than 180° with a Protractor
To draw an angle less than 180° with a protractor, first find the measure of the angle. Then, using the markings on the protractor, line up the 0° mark with the point where the angle intersects the protractor’s base line. Finally, use the other markings to measure the angle.
