Straight Angle

An angle is formed when two line segments are joined at a single endpoint or when two line segments are combined at a single endpoint. The point where the two lines meet is called the Vertex of the angle. There are basically 6 types of angles whose vertex values are different respectively and they are Acute Angle, Obtuse Angle, Right Angle, Straight Angle, Reflex Angle and Full Angle.

Straight Angle Definition

A straight angle is an angle, whose vertex point has a value of 180 degrees. Basically, it forms a straight line, whose sides lie in opposite directions from the vertex. It is also termed as Flat angle sometimes. Some of the straight angle examples in our day to day life are:

  • A flat surface has an angle of 180 degrees.
  • A straight stick has an angle which is straight or 180 degree.

Straight Angle

A straight angle is different from the straight line, as it measures 180 degrees and a straight line is a connector of two points.

Can we consider a triangle made from a straight angle?

Straight angle cannot be considered as straight angle triangle because, for a triangle, the figure should form an enclosed structure. Triangle is a closed three-sided figure, which has three distinct points which are not collinear with each other. But, in the case of the Straight line, the points are collinear and hence they cannot form a closed structure. Therefore, there is no triangle formed.

Know more topics related to angles and triangles by visiting BYJU’S study materials.

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Practise This Question

If the solution of the differential equation dydx=ax+32y+f represents a circle, then the value of 'a' is