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9.1.2 Finding Unknown Angles in Triangles Homework

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9.1.2 Finding Unknown Angles in Triangles Homework
9.1.2 Finding Unknown Angles in Triangles
Homework
Name _______________________________________ Date ______________ Period ______
Work through each of the problems below to practice the concepts from today’s lesson and
review concepts from previous lessons. Then review AND FIX work your work using the class
website. Be sure to always show all work!
9-21. Find the measure of the missing angle in each triangle below and then classify the
triangle as acute, right, or obtuse.
a.
b.
9-22. Find the measures of the angles requested and explain how you found them. Each part
is a separate problem.
a. If m 4 = 61°, find m 6.
b. If m 1 = 48°, find m 8.
c. If m 2 = 137°, find m 8.
9-26. Solve each equation for y.
a. 6x + 5y = 20
b. 4x − 8y = 16
9-23. Graph the rule y = 2x − 6.
9-24. Graph the data in the table at right. Is there an association?
9-25. Tina’s rectangular living room floor measures 15 feet by 18 feet.
a. How many square feet of carpet will Tina need to cover the entire floor?
b. The carpet Tina likes is sold by the square yard. How many square yards will she
need?
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