# Flashcards - FTCE Middle Grades Math: Properties of Triangles

Flashcards - FTCE Middle Grades Math: Properties of Triangles
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centroid
In mathematics and physics, the centroid or geometric center of a plane figure is the arithmetic mean position of all the points in the shape
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equilateral triangle
In geometry, an equilateral triangle is a triangle in which all three sides are equal
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triangle
A triangle is a polygon with three edges and three vertices
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median
The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half
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isosceles triangle
In geometry, an isosceles triangle is a triangle that has two sides of equal length
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11 cards in set
Front
Back
isosceles triangle
In geometry, an isosceles triangle is a triangle that has two sides of equal length
median
The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half
triangle
A triangle is a polygon with three edges and three vertices
equilateral triangle
In geometry, an equilateral triangle is a triangle in which all three sides are equal
centroid
In mathematics and physics, the centroid or geometric center of a plane figure is the arithmetic mean position of all the points in the shape
collinear
In geometry, collinearity of a set of points is the property of their lying on a single line
point of concurrency
In geometry, three or more lines in a plane or higher-dimensional space are said to be concurrent if they intersect at a single point
obtuse
In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle
exterior angle
In geometry, an angle of a polygon is formed by two sides of the polygon that share an endpoint
constructing triangles
Compass-and-straightedge construction, also known as ruler-and-compass construction or classical construction, is the construction of lengths, angles, and other geometric figures using only an idealized ruler and compass
orthocenter
In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to a line containing the base

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