What Are a Few Obtuse Angle Examples from the Real World?

Most home rooftops have obtuse angles because the two roof surfaces slope downward from it. Other instances of obtuse angles in the real world include the angle formed by a boomerang’s wings, a hockey stick, an accordion hand fan, and the screen and base of an open laptop. Obtuse angles are typically seen anytime two sides, arms, or surfaces diverge significantly.

The degree of rotation between two straight lines that share an end point or vertex is known as an angle. There are five different kinds of angles in geometry. Greater than 90 degrees but less than 180 degrees is an obtuse angle. A right angle is one that is exactly 90 degrees, while an acute angle is less than that.

A reflex angle is one that is larger than 180 degrees, while a straight angle is exactly 180 degrees. It’s possible to classify a whole angle, which measures 360 degrees, as the sixth kind of angle. An angle whose measure is higher than a right angle but less than a straight angle is another way to describe an obtuse angle in these terms.

The following is a typical method for memorising for people who find it challenging or confusing to recall the various definitions of angles: Reflex angles can be thought of as having good “reflexes,” as in being bendy or overstretched, while acute angles are “cute” or small, obtuse angles are “obtuse,” fat, or wide, right angles are “right” as in correct or perfect, straight angles are “straight” like a line, and obtuse angles are “right” as in fat or wide.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.

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