Chapter 5, Section 3
Medians and Altitudes of a Triangle
Median of a Triangle
Is a segment whose endpoints are a vertex of the triangle & the midpoint
of the opposite side.
The point of concurrency of
Answers to Chapter 3.3that are not answered in the book
Short hand fallacy key for chapter 3.3:
Appeal to Unqualified Authority = UA
Hasty Generalization = HG
False Cause = FC Slippery Slope = SS
If t
Chapter 3, Section 1
Lines & Angles
Definitions
Skew Lines: Do not intersect & are not coplanar
Parallel Lines: never intersect and are coplanar
Parallel Planes: planes which do not intersect
Parallel
Chapter 2, Section 4
Properties
Subtraction: If a=b, then a-c=b-c
Multiplication: If a=b, then ac = bc
Addition: If a=b, then a+c=b+c
Division: If a=b and c0, then ac=bc
Additional Properties
Reflexiv
Chapter 2, Section 1
Conditional Statement
Also know as an If-then statement.
If its Monday, then I will go to school.
Hypothesis: its Monday
Conclusion: I will go to school
Converse
When you switch t
Chapter 1, Section 1
Patterns & Inductive Reasoning
Conjecture
An unproven statement that is based on observation.
Look at the figure or statement & prove that its true or false.
Example: All odd numb
Chapter 1, Section 4
Angles & Their Measures
Parts of an Angle
The endpoint they share is called the vertex.
The two rays are called the sides.
An angle can be named by its vertex alone or 3 points.
A
Chapter 7, Section 1
Rigid Motion in a Plane
Definitions
Transformations is moving the preimage to becoming the image.
Preimage: The original figure.
Image: the new image after the transformation.
Iso
Chapter 6, Section 1
Polygons
Describing a Polygon
An enclosed figure (all segments)
Two segments meet @ a point called a vertex
Each segment is called a side.
Identifying a Polygon
Number of Sides ar
Chapter 4, Section 1
Triangles & Angles
Naming a Triangle
Equilateral: all sides are congruent
Isosceles: two sides are congruent
Classifying by its sides:
Scalene: no sides are congruent
Classifying
Chapter 4, Section 4
Proving Triangles are Congruent:
o ASA & AAS
o Angle-Side-Angle (ASA)
o Congruence Postulate
o If two angles and the included side of one triangle are congruent to two
angles and
Chapter 5, Section 1
Perpendiculars & Bisectors
Perpendicular Bisector
A segment, ray, line or plane which is perpendicular to a segment at its
midpoint is called a perpendicular bisector.
Equidistant
ShopRite Cashier
5 Days, have to not quit by the 5th week.
- Every night you have opportunities to go out and party, hang out with managers, etc.
Notes/Methods:
- Nights
- Amount of Customers
- Level