Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  • Question 19 (request help)

    Astronomy

    Astronomers sometimes use angle measures divided into degrees, minutes, and seconds. One degree is equal to 60 minutes, and one minute is equal to 60 seconds. Suppose that ∠J and ∠K are complementary, and that the measure of ∠J is 48 degrees, 26 minutes, 8 seconds. What is the measure of ∠K?
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  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 20 (request help)

    Represent Real-World Problems

    The railroad tracks meet the road as shown. The town will allow a parking lot at angle K if the measure of angle K is greater than 38°. Can a parking lot be built at angle K ? Why or why not?
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  • Question 21 (request help)

    Justify Reasoning

    Kendra says that she can draw ∠A and ∠B so that m∠A is 119° and ∠A and ∠B are complementary angles. Do you agree or disagree? Explain your reasoning.
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  • Question 22 (request help)

    Draw Conclusions

    If two angles are complementary, each angle is called a complement of the other. If two angles are supplementary, each angle is called a supplement of the other.

    a. Suppose m∠A = 77°. What is the measure of a complement of a complement of ∠A? Explain.
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  • Question 22 (request help)

    b. What conclusion can you draw about a complement of a complement of an angle? Explain.
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