8th Grade April Vocab Quiz

Question 1

A branch of mathematics that involves expressions with variables.

Answer 1

Algebra

Question 2

Interior angles that lie on the opposite sides of the transversal.

Answer 2

Alternate interior angles.

Question 3

The center point from which dilations are performed.

Answer 3

Center of dilation

Question 4

A fixed point around which shapes move in a circular motion to a new position.

Answer 4

Center of rotation

Question 5

A 3-dimensional figure with one circular based connected by a curved surface to a single point.

Answer 5

Cone

Question 6

Term that means to “have the same measure.”

Answer 6

Congruent

Question 7

Angles that are in the same position on two parallel lines in a relation to a transversal.

Answer 7

Corresponding angles.

Question 8

A 3-dimensional figure with two parallel congruent circular bases connected by a curved surface.

Answer 8

Cylinder

Question 9

A transformation that enlarges or reduces a figure by a scale factor.

Answer 9

Dilation

Question 10

An angle between one side of a polygon and the extension of an adjacent side.

Answer 10

Exterior angle

Question 11

An angle inside a polygon.

Answer 11

Interior angle

Question 12

The four inside angles formed by two lines cut by a transversal.

Answer 12

Interior angles

Question 13

The two sides of a right triangle that form the right angle.

Answer 13

Legs

Question 14

Lines in the same place that never intersect or cross.

Answer 14

Parallel lines

Question 15

Two lines that intersect to form right angles.

Answer 15

Perpindicular lines

Question 16

The original figure before a transformation.

Answer 16

Pre-image

Question 17

In a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the legs (a) and (b). a² + b² = c²

Answer 17

Pythagorean Thereom

Question 18

A transformation where a figure is flipped over a line. Also called a flip.

Answer 18

Reflection

Question 19

A triangle with one right angle.

Answer 19

Right triangle

Question 20

A transformation in which a figure is turned into a fixed point.

Answer 20

Rotation

Question 21

The ratio of the lengths of two corresponding sides of two similar polygons.

Answer 21

Scale factor

Question 22

If one image can be obtained from another by a sequence of transformations and dilations.

Answer 22

Similar

Question 23

An operation that maps a geometric figure, preimage, onto a new figure, image.

Answer 23

Transformation

Question 24

A transformation that slides a figure from one position to another without turning.

Answer 24

Translation

Question 25

A line that intersects two or more lines.

Answer 25

Transveral

Question 26

A figure formed by three line segments that intersect only at their endpoints.

Answer 26

Triangle

Question 27

The point where the sides of the angles meet.

Answer 27

Vertex

Question 28

Figures that have the same size and shape and corresponding sides and angles with equal measure.

Answer 28

Congruent figures

Question 29

The distance across a circle through its center.

Answer 29

Diameter

Question 30

An image larger than the original.

Answer 30

Enlargement

Question 31

Any angle that measures greater than 90° but less than 180°.

Answer 31

Obtuse angle

Question 32

The ratio of the circumference to its diameter. The greek letter π represents the number, 3.1415926...

Answer 32

Pi

Question 33

An angle that measures exactly 90°.

Answer 33

Right angle

Question 34

A scale written as a ratio without units in simplest form.

Answer 34

Scale factor

Question 35

An angle that measures exactly 180°.

Answer 35

Straight angle

Question 36

Two angles with a sum of measures equaling 180°.

Answer 36

Supplementary angles

Question 37

A figure with three sides and three angles.

Answer 37

Triangle

Question 38

The common endpoint of the rays forming an angle.

Answer 38

Vertex

Question 39

The number of cubic units needed to fill the space occupied by a solid.

Answer 39

Volume

Question 40

Opposite angles formed by the intersection of two lines. These angles are congruent to each other.

Answer 40

Vertical angles