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Geometry CH 12 Vocabulary Flashcards

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Questions and Answers

What is the definition of an equilateral triangle?

A figure made up of two or more three-dimensional figures

A quadrilateral with opposite sides both parallel

A triangle with one obtuse angle

A triangle with three congruent sides (correct)

What is a composite figure?

A figure made up of two or more three-dimensional figures

What defines a parallelogram?

A quadrilateral with opposite sides both parallel and congruent

What does volume measure?

The amount of space within a three-dimensional figure Signup and view all the answers

Define a rectangular prism.

A three-dimensional figure with six rectangular faces, twelve edges, and eight vertices Signup and view all the answers

What is a regular polygon?

A polygon with congruent sides and all congruent angles Signup and view all the answers

What characterizes a triangular prism?

A prism with two congruent triangular bases Signup and view all the answers

What is an obtuse triangle?

A triangle with one obtuse angle Signup and view all the answers

What is a face in geometry?

A flat surface of a three-dimensional figure Signup and view all the answers

What is a polygon?

A closed figure made up of line segments that do not cross each other Signup and view all the answers

What defines a square?

A rectangle with four congruent sides Signup and view all the answers

What is a pentagon?

A polygon with five sides Signup and view all the answers

Study Notes

Triangle Types

Equilateral triangle: All three sides are congruent.
Obtuse triangle: Contains one angle greater than 90 degrees.

Geometric Figures

Composite figure: Composed of two or more three-dimensional figures.
Parallelogram: A quadrilateral where opposite sides are both parallel and congruent.
Polygon: A closed figure formed by non-crossing line segments.
Regular polygon: All sides and angles are congruent.
Pentagon: Specifically a polygon with five sides.

Three-Dimensional Figures

Volume: Represents the amount of space inside a three-dimensional figure.
Rectangular prism: Comprised of six rectangular faces, twelve edges, and eight vertices.
Triangular prism: Contains two congruent triangular bases.

Surfaces and Dimensions

Face: A flat surface that forms part of the boundary of a three-dimensional figure.
Square: A type of rectangle where all four sides are congruent.

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Test your knowledge of key terms in Geometry Chapter 12 with these flashcards. Each card features a geometric term along with its definition, helping you to understand concepts like equilateral triangles and volume. Perfect for studying for exams or reinforcing vocabulary skills.