Geometry
Homework Lesson 2.3
Name ___________________________
Use your rules of logic to draw a conclusion.
1.
If a student gets an A on the final exam, then the student will pass the course.
Felicia gets an A on the music theory final exam.
2.
If an animal is a red wolf, then its scientific name is Canis rufus.
If an animal is named Canius rufus, then it is endangered.
3.
John is in his room or John is in the kitchen.
John is not in the kitchen.
4.
If Manuela has eaten guacamole, then she has tasted avocado.
Manuela has eaten guacamole.
5.
If a triangle is isosceles, then it has at least two angles equal in measure.
ABC does not have at least two angles equal in measure.
6.
If the circus is in town, then there are tents at the fairground.
If there are tents at the fairground, then Paul is working as a night watchman.
7.
Sam is either going to go to Old Chicago’s or Macaroni Grill for dinner.
Sam did not go to Old Chiago’s.
8.
If Jana scores 85 or less, she lowers her average.
Jana did not lower her average.
9.
If a student wants to go to college, then the student must study hard.
Rashid wants to go to CSU.
Decide if each argument is valid or invalid.
10.
q
r
11.
13.
s or t
12.
v
not r
not s
w
 not q
 not t
v
Every person in 1st period math class has at least a B average.
Amy is not in 1st period math.
Therefore, Aretha does not have at least a B average in math.
14.
In order to be the winning pitcher in a baseball game, you must pitch at least 5 innings.
Tyler pitched 5 innings.
Therefore, he was the winning pitcher.
15.
Every rectangle is a parallelogram
Quadrilateral ABCD is a rectangle.
Therefore, quadrilateral ABCD is a parallelogram.
w