Vocabulary Basic

Question 1

a line, ray or other figure that passes through the midpoint of a segment.

Answer 1

Segment Bisector

Question 2

a specific location with no dimension and is represented by a dot.

Answer 2

Point

Question 3

an infinite series of points.

Answer 3

Line

Question 4

a flat surface with no thickness that extends in all directions for infinity.

Answer 4

Plane

Question 5

a portion of a line.

Answer 5

Line Segment

Question 6

a part of a line with an endpoint on one end and goes on forever in the other direction.

Answer 6

Ray

Question 7

two rays that are connected to the same point.

Answer 7

Angle

Question 8

a ray that divides an angle into two equal parts.

Answer 8

Angle Bisector

Question 9

an angle that measures 90 degrees.

Answer 9

Right Angle

Question 10

an angle whose measure is less than 90 degrees, but more than 0 degrees.

Answer 10

Acute Angle

Question 11

an angle whose measure is more than 90 degrees, but less than 180 degrees.

Answer 11

Obtuse Angle

Question 12

an angle whose measure is 180 degrees.

Answer 12

Straight Angle

Question 13

two angles that share a vertex and share a common side that separates them.

Answer 13

Adjacent Angles

Question 14

any two angles that add up to 90 degrees.

Answer 14

Complementary Angles

Question 15

any two angles that add up to 180 degrees.

Answer 15

Supplementary Angles

Question 16

two or more lines that meet or cross at a point.

Answer 16

Intersecting Lines

Question 17

two intersecting lines that form right angles.

Answer 17

Perpendicular Lines

Question 18

two lines in the same plane that never intersect.

Answer 18

Parallel Lines

Question 19

3 or more points on the same line

Answer 19

Collinear

Question 20

3 or more points on the same plane

Answer 20

Coplaner

Question 21

a point that equally divides a line segment.

Answer 21

Midpoint

Question 22

two adjacent angles that form a straight line.

Answer 22

Linear Pair

Question 23

the common endpoint of the sides of the angle.

Answer 23

Vertex

Question 24

when a figure is folded on a line and the two sides lie exactly over each other.

Answer 24

Symmetry

Question 25

the direction of the clock.

Answer 25

Clockwise

Question 26

the opposite direction of the clock.

Answer 26

Counter Clockwise

Question 27

is the same size and shape.

Answer 27

Congruent Figures

Question 28

when figures have the same shape, but are not the same size as each other.

Answer 28

Similar Figures