# Content Map CCGPS Analytic Geometry Unit 1

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10 Οκτ 2013 (πριν από 4 χρόνια και 7 μήνες)

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Content Map

CCGPS Analytic Geometry

Unit 1

Revised
10/10/2013

Teachers:
_____________________
Subject/
Unit
:
Unit

1

Date Range of Unit: _
days_______

Big Idea or Unit:

Similarity, Congruence, and Proofs

Unit Essential Question
s
:

What is a dilation and how does this transformation affect a figure in
the coordinate plane?

What strategies can I use to determine missing side lengths and area
s
of similar figures?

Under what conditions are similar figures congruent?

How do I know which method to use to prove two triangles
congruent?

How do I know which method to use to prove two triangles similar?

How do I prove geometric theorems involving lin
es, angles, triangles,
and parallelograms?

In what ways can I use congruent triangles to justify many geometric
constructions?

How do I make geometric constructions?

Concept:
Understand

similarity in terms of

similarity

transformations
.

Concept:
Prov
e theorems

involving similarity.

Concept:
Understand

congruence in terms of

rigid motions
.

Concept:
Prove geometric

Theorems
.

Concept:

Make

geometric
c
onstructions
.

Lesson Essential Standards:

MCC9
-
12.G.SRT.1
Verify
experimentally the properties
of di
lations given by a center
and a

scale factor:

a.
A dilation takes a line not
passing through the center of
the dilation to a parallel line,
and

leaves a line passing
through the center
unchanged.

b.
The dilation of a line
segment is longer or shorter
in th
e ratio given by the scale
factor.

Lesson Essentia
l Standards
:

MCC9
-
12.G.SRT.4
Prove
Theorems include: a line
parallel to one

side of a
triangle divides the other two
proportionally, and
conversely; the Pythagorean
Theorem

proved using triangle
similarity.

MCC9
-
12.G.SRT.5
Use
con
gruence and similarity
criteria for triangles to solve
problems and to

prove
relationships in geometric

Lesson Essential Standards
:

MCC9
-
12.G.CO.6
Use
geometric descriptions of
rigid motions to transform
figures and to

predict the
effect of a give
n rigid motion
on a given figure; given two
figures, use the definition

of
congruence in terms of rigid
motions to decide if they are
congruent.

MCC9
-
12.G.CO.7
Use the
definition
of congruence in
terms of rigid

motions to show that two

triangles are congru
ent if and
Lesson
Essential Standards
:

MCC9
-
12.G.CO.9
Prove
angles. Theorems include:
vertical angles are

congruent; when a transversal
crosses parallel lines, alternate
interior angles are congruent
and

corresponding angles are
congruent; points on

a
perpendicular bisector of a
line segment are

exactly those equidistant from
the segment’s endpoints.

MCC9
-
12.G.CO.10
Prove
Lesson Essential Standards
:

MCC9
-
12.G.CO.12
Make
formal geometric
construction
s with a variety
of tools and methods

(compass and straightedge,
string, reflective

devices,
paper folding, dynamic
geometric software,

etc.).
Copying a segment; copying
an angle; bisecting a
segment; bisecting an angle;
constructing

perpendicular
lines, i
ncluding the
perpendicular bisector of a
line segment; and
MCC9
-
12.G.SRT.2
Given
two figures, use the definition
of similarity in terms of
similarity

transformations to
decide if they are similar;
explain using similarity
transformations the

meaning of similarity for
triangles as

the equality of all
corresponding pairs of angles
and the

proportionality of all
corresponding pairs of sides.

MCC9
-
12.G.SRT.3
Use the
properties of similarity

t
ransformations to establish
the AA criterion

for two
triangles to be similar.

f
igures.

only if corresponding pairs of
sides and corresponding pairs
of

angles are congruent.

MCC9
-
12.G.CO.8
Explain
how the criteria for triangle
congruence (ASA, SAS, and
SSS)

definition of congruence in
terms of rigid motions.

Theorems include: measures
of interior

angles of a triangle sum to 180
degrees; base angles of
isosceles

triangles are
congruent; the

segment joining midpoints of
two sides of a triangle is
parallel to the third side and
half the

length; the medians of a
triangle meet at a point.

MCC9
-
12.G.CO.11
Prove
parallelograms. Theorems
include: opposite

sides are

congruent, opposite angles are
congruent, the diagonals of a
parallelogram bisect each
other, and

conversely, rectangles are parallelograms with
congruent diagonals.

constructing a

line parallel to a given line
through a point not on the
line.

MCC9
-
12.G.CO.13
Construct an equilateral
triangle, a square, and a
regular hexagon inscribed

in
a circle.

Vocabulary:

Dilations

Center

Scale Factor

Parallel lines

Line Segments

Ratio

Similarity

Transformations

Corresponding angles

Corresponding sides

Proportionality

AA criterion

Vocabulary:

Alternate Exterior Angles

Alternate Interior Angles

Angle

Bisecto
r

Centroid

Circum center

Coincidental

Complementary Angles

Congruent

Congruent Figures

Corresponding Angles

Corresponding Sides

Dilation

Vocabulary:

Equilateral

Exterior Angle of a Polygon

In ce
nter

Intersecting Lines

Intersection

Line

Line Segment or Segment

Linear Pair

Measure of each Interior
Angle of a Regular n
-
gon:

Orthocenter

Parallel Lines

Perpendicular Lines

Plane

Vocabulary:

Reflection

Reflection Line

Regular Polygon

Remote Interior Angles of a
Triangle

Rotation

Same
-
Side Interior Angles

Same
-
Side Exterior Angles

Scale Factor

Similar Figures

Skew Lines

Sum of the Measures of the
Interior Angles o
f a Convex
Polygon

Vocabulary:

Construction

Segments

Angles

Bisect

Perpendicular lines

Perpendicular bisectors

Parallel lines

Equilateral triangle

Regular hexagon

inscribed

Parallel

Pythagorean Theorem

Endpoints

Equiangular

Similarity

Point

Proportion

Ratio

Ray

Rigid motions

Transform

Corresponding Angles

Co
rresponding Sides

Supplementary Angles

Transformation

Translation

Transversal

Vertical Angles

Alternate interior

Perpendicular bisector

Equidistant

Endpoints

Theorems:

Interior angle sum Theorem

Base angles of Isosceles
Triangle Theorem

Segments of m
idpoints of a
triangle Theorem

Medians of a triangle
Theorem

Median Isosceles Triangle
Midpoints