1. MATH 334, College Geometry Name
Exam 1, Spring, 2015
Instructions: Construct clear and concise arguments for
problems or proofs. Credit will be given for correct
steps leading to an incorrect solution or proof; little credit will
be given for unsupported answers or poorly
constructed proofs. Correct use of notation and symbols as
adopted in class is required. Accurately drawn
figures must accompany arguments.
In problems 1 to 3 use axioms, definitions, and theorems for
incidence geometry.
1. (9 points) Interpret point to be one of A, B, C, and D, where
each is a vertex of a square. Interpret
line to be one of {A, B}, {B, C}, {C, D}, and {A, D}. Interpret
lies on to mean “is an element of.”
(a) Draw a schematic for this geometry. (b) Is this a model for
incidence geometry? If so,
verify the model. If not, explain why.
(c) Which parallel postulate applies to this geometry?
2. (8 points) A schematic for a geometry is shown below. There
are four points (indicated by letters)
and one line.
A B C D
(a) By adding a minimum number of points and lines to

2. the given geometry, construct a model for incidence
geometry.
(b) Which parallel postulate is satisfied
by the model you constructed in
part (a)?
3. (12 points) Prove the theorem. A model for incidence
geometry that satisfies the Euclidean parallel
postulate has at least four distinct points.
In problems 4 to 8 use axioms, definitions, and theorems for
plane geometry.
4. (8 points) Let f : ` ! R be a coordinate function, and let A, B,
and C be distinct points lying on
line ` such that f(A) = 5 + f(B) = �3 + f(C).
(a) Find AB and BC.
(b) Use the ⇤ notation to show which point is between the other
two.
5. (18 points) In the French railway metric, the distance
between two points lying on the same radial
is given by ⌧((x1, y1), (x2, y2)) =
p
(x2 � x1)2 + (y2 � y1)2. A radial is any ray whose endpoint is
at
the origin of the coordinate plane.
(a) Show that f(x, y) = x

3. p
1 + m2 is a coordinate function for a radial in the French
railway metric.
(b) Use the metric to find the distance between (�1, 3) and (6,
�18).
(c) Find a coordinate function for the radial that contains the
points (�1, 3) and (6, �18).
(d) Use the coordinate function to find coordinates for the
points (�4, 12) and (3, �9), lying on the
same radial.
(e) Use the coordinate function to find the distance between the
points (�4, 12) and (3, �9).
6. (14 points) Prove that if A, B, and C are three
points such that B lies on
�!
AC, then A ⇤ B ⇤ C
if and only if AB < AC.
A
B
C
D
E

4. F
7. (16 points) In the figure above, AB ⇠= BF ⇠= CF and BFC
is a right angle. Let µ(ABC) = 74o,
µ(CFE) = 15o, and µ(ECF) = 135o. Find each angle and
explain what theorem(s) you used to
find the angle.
(a) µ(DCE) (b) µ(ABF)
(c) µ(BAF) (d) µ(CEF)
8. (15 points) Let AB, BC, CD, and AD be four
segments where all intersections occur only at
endpoints. Prove that if A, B, C, and D do not
lie on line `, and ` AB 6= ?, then ` intersects
exactly one of BC, CD, or AD.
Assignment 2: Supply Chain Design and Implementation
This assignment will help you develop an understanding about
the life cycle of supply chains including the models that are
aligned with it and the cost it bears. In addition, you will
develop an awareness of the elements of the supply chain that
should be monitored to ensure the desired results are being
obtained.
Scenario:
You have been asked to be a guest speaker in a high school
business class. Your task is to explain the basic concepts of
supply chain management to a group of students. The students
will take a quiz on supply chain management based on the
information in your presentation.
Instructions:

5. Develop a creative, engaging, educational handout that students
can use to prepare for the quiz. Your handout should accomplish
the following tasks.
1. Diagram and explain the life cycle of a supply chain.
2. Explain, and provide examples of, the models organizations
use to manage forecasting, planning, and inventory.
3. Examine, and provide examples of, the costs absorbed by
organizations with respect to inventory and logistics.
4. Describe how organizations use various parameters to
monitor supply chain performance and provide examples.
Your handout should be written in a clear, concise, and
organized manner, as well as demonstrate ethical scholarship in
accurate representation and attribution of sources (i.e., APA);
and display accurate spelling, grammar, and punctuation.
Write a 1–2-page handout in Word format. Apply APA
standards to citation of sources. Use the following file naming
convention: LastnameFirstInitial_M4_A2.doc.
By Wednesday, February 11, 2015, deliver your assignment to
the M4: Assignment 2 Dropbox.
Grading Criteria:
Assignment Components
Proficient
Max Points
Diagram and explain the life cycle of a supply chain.
Diagram and explanation are accurate, logical, and reflect in-
depth comprehension of the supply chain life cycle.
20
Explain, and provide examples of, the models organizations use
to manage forecasting, planning, and inventory.
Examples provided correctly reference models used to manage
forecasting, planning, and inventory. Explanation reflects a
clear and accurate understanding of concepts related to supply
chain management models.
24
Discuss, and provide examples of, the costs absorbed by
organizations with respect to inventory and logistics.

6. Costs related to inventory and logistics are accurately identified
and thoroughly discussed in terms of their impact on the
organization.
20
Describe how organizations use various parameters to monitor
supply chain performance and provide examples.
Description is accurate and detailed and reflects in-depth
knowledge of parameters used to monitor supply chain
performance.
16
Academic Writing
Write in a clear, concise, and organized manner; demonstrate
ethical scholarship in appropriate and accurate representation
and attribution of sources (i.e., APA); and display accurate
spelling, grammar, and punctuation. Use of scholarly sources
aligns with specified assignment requirements.
Wrote in a clear, concise, and organized manner; demonstrated
ethical scholarship in appropriate and accurate representation
and attribution of sources; and displayed accurate spelling,
grammar, and punctuation. Use of scholarly sources aligns with
specified assignment requirements.
20
Total
100