A pattern of logical thought whereby statements of fact lead to definite, specific conclusions
Deductive reasoning
How many cookies will be on 5 plates?
15
IF Jimmy named his first child Thing1 AND his second child Thing2 THEN He will name his 3rd child Thing3
Deductive Reasoning
Inductive Reasoning
IF All even numbers are divisible by 2 AND 28 is even THEN 28 is divisible by 2
Deductive Reasoning
Inductive Reasoning
The statement following the "if" in a conditional which sets the standard for comparison
hypothesis
The thinking process whereby observation of past patterns is used to predict future outcomes
Inductive Reasoning
If a = b, then a(c) = b(c). Name the property shown
Multiplication property
If a = b, then a - c = b - c. Name the property shown
Subtraction property
Angle Q and B are...
Corresponding Angles
The statement formed by interchanging the hypothesis and the conclusion of a conditional statement
Converse
The final statement of an argument which follows the "then" portion of a conditional
conclusion
Making general observations of situations and applying them to specific situations.
Deductive Reasoning
Drawing conclusions from observations, examples, or patterns
Inductive Reasoning
If a = b, and b = c, then a = c. Name the property shown
Transitive property
If a = b, then b = a. Name the property shown
Symmetric property
For all real numbers a, a = a. Name the property shown
Reflexive property
Two angles that share a common side, a common vertex, but no common interior points
adjacent angles
What are the correct measures of angles 1 and 2?
Angle 1 = 50⁰ and Angle 2 = 130⁰
What is the measure of ∠ABC?
108°
If a polygon is a regular pentagon, then the polygon has exactly five congruent angles. The polygon is a regular pentagon. What statement is a valid conclusion based on the argument?
Therefore, the polygon has exactly five congruent angles.
A statement of fact that must be accepted without proof
Postulate
A statement written in "if-then" form which establishes a relationship between two situations
conditional
Find the next number in the sequence: 1, -1, 2, -2, 3, ___
-3
A statement of fact derived from deductive reasoning
Theorem
Congruent, opposite angles formed by intersecting lines that share a common vertex
Vertical Angles
For all real numbers, if a = b, then b can be replaced by a. Name the property shown
Substitution property
Lines r and s are cut by a transversal. What value of x proves r ∥ s?
43
What is the value of x?
23
A convincing argument that proceeds logically to show that a statement is true
proof
Which lines are parallel?
Line a and Line b
Find x, then find the measurement of both angles.
x = 30; both angles measure 114 degrees
If angle P measures 60 degrees, what is the measure of angle C?
120 degrees
Find a pattern in the sequence. Use the pattern to show the next two terms. 1, 3, 7, 15, 31, ___ , ___
63,127
Obtuse angles are greater than 90 degrees. This angle is 110 degrees, so it is obtuse.
Deductive Reasoning
Inductive Reasoning
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