What Is a Scalene Angle?

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"Scalene" is a term that is traditionally applied to things like triangles and angles. Learn about a scalene angle with help from a mathematics educator in this free video clip.

Part of the Video Series: Mathematics Lessons
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Video Transcript

Hi, I'm Jimmy Chang and we're here to talk about what is a scalene angle. Now, a scalene angle is a pretty straightforward idea once you get the hang of the definition. Now, scalene, anytime you see that, we're talking about angles that are less than 90 degrees. So, you often find them in scalene triangles, but they're, they can be thought about as stand alone angles. So, oftentimes, we're talking about angles that are drawn, you know, inwards; not outwards nor a straightforward L. Anything else would not be a scalene. So, you have a scalene angle here that's less than 90 degrees and oftentimes with a scalene triangle, all the angles in that triangle are going to be less than 90 degrees. So, here's an illustration of that. In this particular case, as you can tell, all the angles that's given are going to be less than 90 degrees. Now, as you know, all the angles in a triangle have to equal to 180; so, but the important thing to realize is in a scalene triangle, all the angles have to be less than that magic number. So, I'm Jimmy Chang and that's the definition of a scalene angle.

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