What is the length of x? What is the length of EF? Only enter numbers in the answer boxes below:
1 answer:
Focus on triangles DFC and DFE:
- They are both right triangles because DF is perpendicular to EC
So, the two triangles are congruent. It follows that CF=FE, and in particular

And since x=3, the length of EF is

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A,C, and D are in quadrant 3 and C is in quadrant 1
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Step-by-step explanation:
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