Geometry Chapter 1 Test Review

Questions and Answers

What is an acute angle?

Angle equal to 90

Angle more than 0 but less than 90 (correct)

Angle more than 90 but less than 180

Angle equal to 180

What defines an adjacent angle?

Angles that have a common vertex and side but no common interior points

What is an angle?

Figure formed by two rays with a common endpoint

What is an angle bisector?

Figure that divides the angle in half Signup and view all the answers

What does collinear mean?

Points on the same line Signup and view all the answers

What is coplanar?

Figures on the same plane Signup and view all the answers

What is equiangular?

Polygon with all angles congruent Signup and view all the answers

What is an equilateral polygon?

Polygon with all sides equal Signup and view all the answers

What is the intersection in geometry?

Points figures have in common Signup and view all the answers

What defines a line?

Figure made up of points that extends infinitely Signup and view all the answers

What is a line segment?

Portion of a line with two ends Signup and view all the answers

What is a linear pair?

Adjacent angles that form a line Signup and view all the answers

What is the midpoint of a line segment?

Point in the middle of a segment Signup and view all the answers

What defines an obtuse angle?

Angle more than 90 but less than 180 Signup and view all the answers

What does perpendicular mean?

Lines that intersect to form right angles Signup and view all the answers

What is a plane in geometry?

Flat surface made up of more than one point Signup and view all the answers

What defines a point?

Location that doesn't have size or shape Signup and view all the answers

What is a polygon?

Closed two-dimensional figure formed by line segments Signup and view all the answers

What is a polyhedron?

Solid figure formed by polygons Signup and view all the answers

What is a ray?

Portion of a line with one endpoint and extends infinitely in one direction Signup and view all the answers

What is a right angle?

Angle equal to 90 degrees Signup and view all the answers

What is a segment bisector?

Figure that divides a segment in half Signup and view all the answers

What does space mean in geometry?

Three-dimensional set of all points Signup and view all the answers

What is a straight angle?

Angle equal to 180 degrees Signup and view all the answers

What is a supplementary angle?

Angle whose sum is 180 Signup and view all the answers

The term 'undefined' can only be explained using examples.

True Signup and view all the answers

What are vertical angles?

Non-adjacent angles formed when two lines intersect Signup and view all the answers

Study Notes

Angle Types and Properties

Acute angle: Measures greater than 0° and less than 90°.
Obtuse angle: Measures greater than 90° and less than 180°.
Right angle: Exactly 90°.
Straight angle: Exactly 180°.
Supplementary angles: Two angles whose measures add up to 180°.

Angle Relationships

Adjacent angles: Share a common vertex and side, but have no common interior points.
Linear pair: A pair of adjacent angles that form a straight line.
Vertical angles: Non-adjacent angles that are formed when two lines intersect.

Line and Segment Definitions

Angle: Formed by two rays with a common endpoint (the vertex).
Line: A straight figure that extends infinitely in both directions.
Line segment: A part of a line that is bounded by two endpoints.
Ray: A portion of a line that starts at a single endpoint and extends infinitely in one direction.

Points and Planes

Point: A location with no size or shape; a fundamental concept in geometry.
Line: Extends infinitely, comprised of points in a single dimension.
Plane: A flat surface made up of points extending in two dimensions.

Collinearity and Coplanarity

Collinear points: Points that lie on the same straight line.
Coplanar figures: Shapes or points that are contained within the same plane.

Polygon Properties

Polygon: Closed, two-dimensional figure with straight line segments.
Equiangular polygon: A polygon with all angles congruent.
Equilateral polygon: A polygon with all sides congruent.

Bisectors

Angle bisector: A ray that divides an angle into two equal parts.
Segment bisector: A figure that divides a line segment into two equal halves.

Additional Concepts

Intersection: The set of points that two figures have in common.
Space: A three-dimensional set encompassing all points.
Polyhedron: A solid figure composed of polygonal faces.
Midpoint: The point that lies exactly halfway along a line segment.

Undefined Terms

Undefined terms: Concepts that cannot be formally defined but can be understood through examples, such as point, line, and plane.

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Description

Prepare for your geometry test with this review of key terms from Chapter 1. Each flashcard defines important concepts such as acute angles, adjacent angles, and angle bisectors. Test your understanding of these fundamental geometry terms!