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Please help me questions 9 and 10

Please help me questions 9 and 10-example-1
User Amittn
by
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1 Answer

5 votes
Problem 9's answer is choice C) rotation then reflection
Problem 10's answer is choice B) 65 degrees

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Explanations:

For problem 9, we rotate 90 degrees clockwise to go from figure 1 to figure 2. Then we reflect over the x axis to go from figure 2 to figure 3.

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For problem 10, notice how
angle AEB = angle GEC
5x = 3x+10
5x-3x = 10
2x = 10
x = 5

If x = 5, then
angle GEC = 3x+10
angle GEC = 3*5+10
angle GEC = 15+10
angle GEC = 25

So that means
angle FEG = 90 - (angle GEC)
angle FEG = 90 - 25
angle FEG = 65 degrees

User Beatcracker
by
6.3k points