Chapter 1 Terms

Question 1

Point

Answer 1

A point has no dimension. A dot represents a point

Question 2

Line

Answer 2

A line has one dimension. It is represented by a line with two arrowheads, but it extends without end

Through any two points, there is exactly one line. You can use any two points on a line to name it

Question 3

Plane

Answer 3

A plane has two dimensions. It is represented by a shape that looks like a floor or a wall, but it extends without end.

Through any three points not on the same line, there is exactly one plane. You can use the three points that are not all on the same line to name a plane.

Question 4

Segment

Answer 4

A line segment, or segment is a part of a line that consists of two endpoints and all the points on the line between the endpoints

Question 5

Ray

Answer 5

A ray is a part of a line that consists of an endpoint and all points on the line on the side of the endpoint

Question 6

Opposite Rays

Answer 6

Two rays that have the same endpoint and form a line are opposite rays

Question 7

Congruent Segments

Answer 7

Congruent Segments are two or more segments that have the same length

Question 8

Midpoint

Answer 8

The midpoint of a segment is the point that divides the segment into two congruent segments

Question 9

Segment 💗💜💙sector

Answer 9

A segment BIsector is a point, ray, line, line segment, or plane that intersects the segment at its midpoint

Question 10

Polygon

Answer 10

A polygon is a closed plane figure formed by three or more line segments called sides. Each side intersects exactly other two sides, one at each vertex, so that no two sides with a common vertex are collinear

Question 11

Triangle

Answer 11

A polygon with 3 sides, and angles that add up to 180°

Question 12

Quadrilateral

Answer 12

A polygon with 4 sides, and angles that add up to 360°

Question 13

Convex Polygon

Answer 13

A polygon is convex when no line that contains a side of the polygon contains a point in the interior of the polygon

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Question 14

Concave Polygon

Answer 14

A polygon that is not convex is concave

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Question 15

Angle

Answer 15

An angle is a set of points consisting of 2 different rays that have the same endpoint called a vertex.

Question 16

Sides of an angle

Answer 16

the 2 rays that make up an angle

Question 17

Interior of the Angle

Answer 17

the interior of the angle is the region that contains all the points between the sides of the angle

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Question 18

Exterior of the Angle

Answer 18

the exterior of the angle is the region that contains all of the points outside of the angle

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Question 19

Acute Angle

Answer 19

An angle that measures more than 0° and less than 90°

Question 20

Right Angle

Answer 20

An angle that measures 90°

Question 21

Obtuse Angle

Answer 21

An angle that measures greater than 90° and less than 180°

Question 22

Adjacent Angles

Answer 22

Adjacent angles are 2 angles that share a common vertex and side, but have no common interior points

Question 23

Complementary Angles

Answer 23

Complementary angles are 2 positive angles whose measures have a sum of 90°

Question 24

Supplementary Angles

Answer 24

Complementary angles are 2 positive angles whose measures have a sum of 180°

Question 25

Linear Pair

Answer 25

Two ajacent angles are a linear pair when their noncommon sides are opposite rays.

The angles in a linear pair are suplementary angles

Question 26

Vertical angles

Answer 26

Two angles are vertical angles when their sides form two opposite rays