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The plural of the word vertex, used for the corners of a triangle, is what?
AVertexes
BVerticals
CVertexi
DVertices
Answer & Solution
Correct answer: D. Vertices
1. A triangle has three corner points where its sides meet.
2. Each of those corner points individually is called a vertex.
3. When referring to more than one of them together, the correct plural form is vertices.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 3 "Math Models", section 3.4 Solve Geometry Applications: Triangles, Rectangles, and the Pythagorean Theorem_
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