Geometry Terms and Definitions

Questions and Answers

What is a hierarchy?

An order or arrangement of objects based on the relationships among their characteristics (correct)

A type of angle

A shape with four equal sides

A closed figure with no sides

What is an angle?

A figure formed by two rays or lines that share a common endpoint.

What are vertices?

The points at which two lines meet and form an angle.

Parallel lines are two lines that never touch.

True Signup and view all the answers

What is a right angle?

An angle that measures 90 degrees. Signup and view all the answers

What is an acute angle?

An angle less than 90 degrees. Signup and view all the answers

What is an obtuse angle?

An angle larger than 90 degrees. Signup and view all the answers

What are two-dimensional figures?

Flat figures with only two dimensions, such as length and width. Signup and view all the answers

What defines a polygon?

A closed figure with at least 3 straight sides. Signup and view all the answers

What is a parallelogram?

A four-sided figure that has two sets of parallel sides. Signup and view all the answers

What is a quadrilateral?

A four-sided figure. Signup and view all the answers

What defines a trapezoid?

A four-sided figure with only one set of opposite sides being parallel. Signup and view all the answers

What are the characteristics of a rectangle?

Four sides with four right angles, opposite sides are equal in length and parallel. Signup and view all the answers

What is a square?

A four-sided figure with four equal sides and four right angles. Signup and view all the answers

What is a triangle?

A figure with three sides. Signup and view all the answers

What is a rhombus?

A four-sided figure with four equal sides and opposite angles equal. Signup and view all the answers

What is a degree?

A unit of measurement used to describe the size of an angle. Signup and view all the answers

What defines an isosceles triangle?

A triangle with two equal sides and angles. Signup and view all the answers

What is an equilateral triangle?

A triangle with three equal sides and three equal angles. Signup and view all the answers

What is a right triangle?

A triangle with one 90-degree angle. Signup and view all the answers

What defines a scalene triangle?

A triangle with no equal sides. Signup and view all the answers

What is an acute triangle?

A triangle where all three angles are less than 90 degrees. Signup and view all the answers

What is an obtuse triangle?

A triangle with one angle more than 90 degrees. Signup and view all the answers

What is a regular polygon?

A closed figure with congruent sides and angles. Signup and view all the answers

What defines an irregular polygon?

A closed figure with no congruent sides and angles. Signup and view all the answers

What does congruent mean?

Sides or angles are equal. Signup and view all the answers

Study Notes

Geometry Terms and Definitions

Hierarchy: An arrangement of objects based on the relationships among their characteristics.
Angle: Formed by two rays or lines sharing a common endpoint.
Vertices (Vertex): The meeting point of two lines, creating an angle.
Parallel Lines: Lines that never intersect, maintaining equal distance apart.
Right Angle: Measures exactly 90 degrees, forming a perfect corner.
Acute Angle: An angle measuring less than 90 degrees.
Obtuse Angle: An angle measuring more than 90 degrees.

Two-Dimensional Figures

Two-Dimensional Figures: Flat shapes characterized by only length and width, lacking depth.
Polygon: A closed figure with at least three straight sides.
Parallelogram: A four-sided shape (quadrilateral) with two pairs of parallel sides.
Quadrilateral: Any four-sided figure.
Trapezoid: A four-sided figure with one pair of parallel sides.

Specific Types of Polygons

Rectangle: A quadrilateral with four right angles, where opposite sides are equal and parallel.
Square: A special type of rectangle with four equal sides and four right angles.
Triangle: A three-sided figure with varying properties depending on its side lengths and angles.

Triangle Classifications

Rhombus: All four sides are of equal length, with opposite angles being equal.
Isosceles Triangle: A triangle with two equal sides and angles.
Equilateral Triangle: A triangle where all three sides and angles are equal (60 degrees each).
Right Triangle: Contains one angle that measures 90 degrees.
Scalene Triangle: A triangle with no equal sides or angles.
Acute Triangle: All three angles measure less than 90 degrees.
Obtuse Triangle: Contains one angle that exceeds 90 degrees.

Other Geometry Concepts

Regular Polygon: A closed figure with sides and angles that are all congruent.
Irregular Polygon: A closed figure with no sides or angles that are congruent.
Congruent: Refers to sides or angles that are of equal measure.
Degree: A unit used to quantify the size of angles.

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This quiz covers essential geometry terms and definitions including angles, lines, and various two-dimensional figures. Test your knowledge on polygons, parallel lines, and the characteristics of different angles. Perfect for students looking to strengthen their grasp of geometry concepts.