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Geometry 2-3 Guided Practice: Biconditionals and Definitions
By Matthew Richardson
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Last updated almost 4 years ago
12 questions
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Question 1
1.
Solve It!
Look at the examples of the insects and noninsects below.
How would you complete the following sentence: "If an animal is an insect then..."? Explain your reasoning.
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Question 2
2.
Take Note:
Define
biconditional
.
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Question 3
3.
Take Note:
How can you determine if a conditional statement can be written as a
biconditional?
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Question 4
4.
Take Note:
Provide an example of a
biconditional
statement.
Question 5
5.
Problem 1 Got It?
What is the converse of the following true conditional? If the converse is also true, rewrite the statements as a biconditional.
If two angles have equal measure, then the angles are congruent.
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Question 6
6.
Problem 2 Got It?
What are the two conditionals that form this biconditional?
Two numbers are reciprocals if and only if their product is 1.
A
B
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D
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Question 7
7.
Take Note:
What are the three important components of a
good definition
?
Question 8
8.
Problem 3 Got It?
Is the definition of
straight angle
reversible? If yes, write it as a true biconditional.
A straight angle is an angle that measures 180°.
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Question 9
9.
Take Note:
Describe how a
counterexample
can be used to identify poor definitions.
Question 10
10.
Problem 4 Got It?
Is the following statement a good definition? Explain.
A square is a figure with four right angles.
Question 11
11.
Problem 4 Got It? Reasoning:
How can you rewrite the statement so that it is a good definition?
Obtuse angles have greater measures than acute angles.
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Question 12
12.
Take Note:
Summarize the mathematical content of this lesson. What topics, ideas, and vocabulary were introduced?