# Basic math glossary-V

Basic math glossary-V define words beginning with the letter V

Variable: A letter that is used to stand for an unknown number.

Vertex: The point where two rays intersect.

Vertical: Going straight up or down as opposed to going from left to right or from right to left.

Vertical axis: In the cartesian coordinate system, it is the vertical line, or the one called y-axis.

Volume: A measurement of capacity that measures the number of cubit units in a container.

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1. ### Average age word problem

Aug 09, 16 01:40 PM

Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let