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Posted on April 24, 2022 (Updated on July 9, 2025)

What are the undefined terms?

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Undefined terms are those terms that don’t require a formal definition. The four terms are point, line, plane, and set. A point is quite simply, a dot. Points are labeled with one capital letter.

What are examples of undefined terms?

In geometry, point, line, and plane are considered undefined terms because they are only explained using examples and descriptions. that lie on the same line. that lie in the same plane.

What are the three undefined term?

Three Undefined Terms: Point, Line, and Plane – Concept.

What is undefined terms in math?

In mathematics, the term undefined is often used to refer to an expression which is not assigned an interpretation or a value (such as an indeterminate form, which has the propensity of assuming different values).

How do you name an undefined term?

Video quote: The second undefined term is a line. And a line it looks like this. And we draw arrows on the ends.

What is an example of a defined term?

What is an example of define terms? The definition of a term is a word or group of words that has a special meaning, a specific time period or a condition of a contract. An example of term is “cultural diversity.” An example of term is three months for a college semester. …

Which is not an example of undefined term?

There are, however, three words in geometry that are not formally defined. These words are point, line and plane, and are referred to as the “three undefined terms of geometry”. While these words are “undefined” in the formal sense, we can still “describe” these words.

What is an example of a defined term in geometry?

Video quote: Terms the first actual definition in geometry is space that is the set of all points in three dimensions. Notice it's three dimensional. It actually exists we can define it. We often represent space

Why set is undefined term?

The “set” and “empty-set” are “undefined terms”. Undefined terms are terms which cannot be rigorously defined. Rigorously defined means based on other mathematical definition. Mathemations need a place to start thus they chose the concept of the “set” as the place where everything else is defined.

What is a defined term in math?

In geometry, defined terms are terms that have a formal definition and can be defined using other geometrical terms.

What are 3 defined terms in geometry?

We have several undefined words in geometry: point, line, and plane. All other words in Geometry may be defined using these three undefined terms.

What is the difference between defined and undefined terms?

An undefined term is a point, line, or plane. Examples of defined terms are angles. Undefined terms can be combined to define other terms. Defined terms can be combined with each other and with undefined terms to define more terms.

Is line a defined term?

In geometry, a line can be defined as a straight one- dimensional figure that has no thickness and extends endlessly in both directions. It is often described as the shortest distance between any two points. Here, P and Q are points on the line. A line segment is only a part of a line.

Is a ray a defined term?

In geometry, a ray can be defined as a part of a line that has a fixed starting point but no end point. It can extend infinitely in one direction.

Is angle a defined term?

In geometry, an angle can be defined as the figure formed by two rays meeting at a common end point. An angle is represented by the symbol ∠. Here, the angle below is ∠AOB. Angles are measured in degrees, using a protractor.

Is angle defined or undefined?

We can define an angle using the undefined term of a line. That is, we can define an angle as the corners that are created where two non-parallel…

Which figure represents an undefined term?

Here figure D represents an undefined term that is ‘line’.



In basic geometry, there are three different undefined terms.

What undefined term defines a circle?

The definition of a circle uses the undefined term. arc.

What undefined terms define parallel lines?

The undefined terms needed to define parallel lines are ‘lines’ and ‘points. ‘

Which pair of undefined terms is used to define?

Which pair of undefined terms is used to define a ray? Which point is the center of the circle? The definition of an angle uses the undefined term . The definition of an angle uses the undefined term .

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