Answer:
a
Step-by-step explanation:
Answer: c square
This formula is called Pythagorean theorem
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Step-by-step explanation:
Answer:
Step-by-step explanation:

Answer:
67
Step-by-step explanation:
7x9=63
63+4=67
9514 1404 393
Answer:
(c) ∠ECF and ∠BCF
Step-by-step explanation:
Complementary angles total 90°. Here, 90° angle BCE is divided by ray CF into two complementary angles. They necessarily have a total of 90°.
∠ECF and ∠BCF