#### Study sets matching "geometry chapter 9"

#### Study sets matching "geometry chapter 9"

bases

bisect

circle

concentric circles

the congruent parallel polygons that form the "top" and "bott…

to divide into two congruent parts

the set of all points on a flat surface that are the same dis…

circles that have the same center

bases

the congruent parallel polygons that form the "top" and "bott…

bisect

to divide into two congruent parts

Angle of rotation

Axis of symmetry

Line of reflection

Line of symmetry

the angle through which a preimage is rotated to form the ima…

A line that divides a plane figure or a graph into two congru…

A line that a figure is flipped across to create a mirror ima…

a line that divides a figure into two halves that are mirror…

Angle of rotation

the angle through which a preimage is rotated to form the ima…

Axis of symmetry

A line that divides a plane figure or a graph into two congru…

transformation

reflection

isometry

line of symmetry

reflections, rotations, translations, and dilations are ALL t…

a transformation that flips a figure. a figure can be reflect…

also called a congruence transformation. means that the image…

if you fold a figure and the two halves match exactly, the fo…

transformation

reflections, rotations, translations, and dilations are ALL t…

reflection

a transformation that flips a figure. a figure can be reflect…

transformation

isometry

translation

preimage

A change in the position, shape, or size of a figure.

A transformation in which the preimage and image are congruent

All points in a figure move the same distance in the same dir…

The given or original figure on which a transformation is per…

transformation

A change in the position, shape, or size of a figure.

isometry

A transformation in which the preimage and image are congruent

transformation

preimage

image

isometry

a change in the position, shape, or size of a figure

the original figure

the transformed figure

a transformation in which the preimage and image are congruent

transformation

a change in the position, shape, or size of a figure

preimage

the original figure

Preimage

Image

Transformation

Rigid Transformation

the original figure in a transformation

The resulting figure after a transformation

A movement of a geometric figure

Movements of figures that preserve their shape and size

Preimage

the original figure in a transformation

Image

The resulting figure after a transformation

Center

Chord

Secant

Point of Tangency

given point from which all points on a circle are the same di…

A segment whose endpoints are 2 points... on a circle.

A line that intersects a circle in two points

Point where a Tangent segment touches a circle

Center

given point from which all points on a circle are the same di…

Chord

A segment whose endpoints are 2 points... on a circle.

bases

bisect

circle

concentric circles

the congruent parallel polygons that form the "top" and "bott…

to divide into two congruent parts

the set of all points on a flat surface that are the same dis…

circles that have the same center

bases

the congruent parallel polygons that form the "top" and "bott…

bisect

to divide into two congruent parts

transformation

reflection

line of reflection

isometry

In a pane, a mapping for which each point has exactly one ima…

A transformation representing a flip of the figure over a poi…

A line through a figure that separates the figure into two mi…

A mapping for which the original figure and its image are con…

transformation

In a pane, a mapping for which each point has exactly one ima…

reflection

A transformation representing a flip of the figure over a poi…

Transformation

Preimage

Image

Rigid Motion

Change the position, shape, or size of a figure.

Original figure in a transformation.

New figure after the transformation

A transformation that the figure maintains the same shape and…

Transformation

Change the position, shape, or size of a figure.

Preimage

Original figure in a transformation.

Cross products

Extremes

Means

Geometric mean

Every proportion has two of these

20/30=2/3 (20 and 3 are these)

20/30=2/3 (30 and 2 are these)

Between 2 positive numbers a & b is the positive number x in…

Cross products

Every proportion has two of these

Extremes

20/30=2/3 (20 and 3 are these)

Line of Reflection

Translation Vector

Center of Rotation

Angle of Rotation

A line through a figure that separates the figure into two mi…

The vector in which a translation maps each point to its image

A fixed point about which shapes move in a circular motion to…

The angle through which a preimage is rotated to form the image

Line of Reflection

A line through a figure that separates the figure into two mi…

Translation Vector

The vector in which a translation maps each point to its image

angle of depression

angle of elevation

cosine

inverse cosine

The angle that a downward line of sight makes with a horizont…

The angle that an upward line of sight makes with a horizonta…

Adjacent over hypotenuse.

An inverse trig ratio that lets you go backwards to find the…

angle of depression

The angle that a downward line of sight makes with a horizont…

angle of elevation

The angle that an upward line of sight makes with a horizonta…

Ratio

Proportion

Cross Products

Geometric Mean

A comparison of two quantities

An equation that states that two ratios are equal

In a proportion, if a/b=c/d, then a

**d = b**aIn a proportion, If a/b = x/b, the geometric mean ... of a and b…

Ratio

A comparison of two quantities

Proportion

An equation that states that two ratios are equal

15

9.2

40

170

The perimeter of a rectangle with length of 5cm and width of…

The perimeter of a square with sides of length 2.3mm is _____…

The perimeter of a parallelogram with two sides 12cm long and…

The perimeter of a regular pentagon with sides of length 34in…

15

The perimeter of a rectangle with length of 5cm and width of…

9.2

The perimeter of a square with sides of length 2.3mm is _____…

circle

center

radius

chord

the set of points in a plane that are a given distance from a…

the given point at the middle of the circle

the distance from the center to the edge of the circle

a segment whose endpoints lie on a circle

circle

the set of points in a plane that are a given distance from a…

center

the given point at the middle of the circle

circle

radius

chord

diameter

a locus of points that are all equidistant from a center point

a line segment that goes from the center of the circle to a p…

a segment whose endpoints are both points on a circle

a chord that passes through the center of the circle

circle

a locus of points that are all equidistant from a center point

radius

a line segment that goes from the center of the circle to a p…

preimage

component form

image

transformation

the original figure before it is manipulated

horizontal first, then vertical

the new figure after it has been manipulated

manipulation that changes a figure

preimage

the original figure before it is manipulated

component form

horizontal first, then vertical

radius

chord

diameter

secant

a segment that joins the center to a point on the circle

segments whose endpoints lie on the circle

a chord that contains the center

contains a chord; extends beyond the circle points

radius

a segment that joins the center to a point on the circle

chord

segments whose endpoints lie on the circle

Transformation

Reflection

Rotation

Translation

A figure that has the same shape but is rotated, flipped, dil…

Mirror Image of a figure

one point rotating on a specific point by a given angle.

Sliding or Moving a shape but without rotating or flipping th…

Transformation

A figure that has the same shape but is rotated, flipped, dil…

Reflection

Mirror Image of a figure

Postulate 8 or The Area Postulate

Postulate 9

Corollary to Postulate 9

Theorem 38

Every polygonal region has a positive number called its area…

The area of a rectangle is the product of its base and altitu…

The area of a square is the square of its sides.

The area of a right triangle is half the product of its legs.

Postulate 8 or The Area Postulate

Every polygonal region has a positive number called its area…

Postulate 9

The area of a rectangle is the product of its base and altitu…

Alternate Interior Angles

Exterior Angle

Complementary Angles

Supplementary Angles

Angles between a pair of lines that switch sides of a third i…

When a side of a triangle is extended to form an angle outsid…

Two angles whose measures add up to 90°. Angles T and V are c…

Two angles whose measures add up to 180°. Angles A and B are…

Alternate Interior Angles

Angles between a pair of lines that switch sides of a third i…

Exterior Angle

When a side of a triangle is extended to form an angle outsid…

point

line

plane

coplanar lines

A location in space with no size or shape. Represented by a d…

A straight continuous arrangement of an infinite number of po…

A flat surface with infinite length and width, but no depth.…

Two or more lines located in one plane.

point

A location in space with no size or shape. Represented by a d…

line

A straight continuous arrangement of an infinite number of po…