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Different Types Of Angles
Definition of an Angle
An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle. The word angle comes from a Latin word named ‘angulus,’ meaning “corner.”
Definition of a Degree
A degree usually denoted by ° is the unit of measurement for angles in which one full rotation is 360° (degrees).
Types of Angles
Zero degree Angle
When two lines are in the same direction with a common point and the angle measures as ZERO.
Acute Angle
Angle that measures less than 90o
Right Angle
Angle that measures exactly 90o
Obtuse Angle
Angle that measures more than 90° and less than 180°
Straight Angle
Angle that measures exactly 180°
Reflex Angle
Angle that measures more than 180° and less than 360°
Full Degree Angle
The angle measures 360°, corresponding to the central angle of an entire circle.
Adjacent Angle
Two angles that share the same vertex and have a side in common.
Complementary Angle
Two adjacent angles whose measures add up to 90°
Supplementary Angle
Two adjacent angles whose measures add up to 180°
Opposite Angle
When two straight lines intersect each other, it forms two pairs of angles; each angle of each pair is directly opposite to its matching angle.
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