Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 11:Angle Relationships in Parallel Lines and Triangles; Lesson 3:Angle-Angle Similarity


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  • Question 11 (request help)

    Critique Reasoning Ryan calculated the missing measure in the diagram shown. What was his mistake?

    \(\begin{aligned}\require{cancel}
    \frac{3.4}{6.5}&=\frac{h}{19.5}\\
    19.5\times\frac{3.4}{6.5}&=\frac{h}{19.5}\times19.5\\
    \frac{66.3}{6.5}&=h\\
    10.2\text{cm}&=h
    \end{aligned} \)
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FOCUS ON HIGHER ORDER THINKING

  • Question 12 (request help)

    Communicate Mathematical Ideas For a pair of triangular earrings, how can you tell if they are similar? How can you tell if they are congruent?
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  • Question 13 (request help)

    Critical Thinking When does it make sense to use similar triangles to measure the height and length of objects in real life?
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  • Question 14 (request help)

    Justify Reasoning Two right triangles on a coordinate plane are similar but not congruent. Each of the legs of both triangles are extended by 1 unit, creating two new right triangles. Are the resulting triangles similar? Explain using an example.
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