Vertices

In geometry, a vertex (plural: vertices) is a point where two or more line segments, lines, or rays meet to form an angle. The term "vertex" is often used to refer to the corners of a polygon or the meeting point of edges in a three-dimensional shape.

For example, in a triangle, there are three vertices where the three sides of the triangle meet. In a square, there are four vertices at the four corners. In a cube, there are eight vertices where the edges meet.

Vertices are important in defining the shape and structure of geometric figures. They are used in various mathematical calculations and can help determine properties such as angles, sides, and symmetry.

◂Math Worksheets and Study Guides Third Grade. Estimation

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The resources above cover the following skills:

Number and Operations (NCTM)

Understand numbers, ways of representing numbers, relationships among numbers, and number systems.

Understand the place-value structure of the base-ten number system and be able to represent and compare whole numbers and decimals.

Compute fluently and make reasonable estimates.

Develop and use strategies to estimate the results of whole-number computations and to judge the reasonableness of such results.

Select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.

Algebra (NCTM)

Use mathematical models to represent and understand quantitative relationships.

Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.