Subtend
/səbˈtend/
Definition 1 of 2
Pro Tip 1/3Geometry Usage
Used to describe how an angle relates to a shape in geometry, like an arc or line.
In this triangle, the top angle subtends the base.
Pro Tip 2/3Visual Imagery
Imagine drawing lines from the angle's vertex to the endpoints of the arc or side it faces.
This angle subtends a larger arc than that one.
Pro Tip 3/3More Than Angles
Though commonly associated with angles, other shapes can subtend parts of geometric figures.
The diameter of the circle subtends a semicircle.
Compare with
BorderCircumscribeCoverEncloseEnvelopIntersectSpanSurround
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