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I am Lyosha [343]
3 years ago
8

3. Find a in the given figure.​

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
3 0

Answer:

Step-by-step explanation:

Angles a and b are opposite, so they are equal. The same is true for angles O and 3b.

So, the four angles are actually (starting from the left and going clockwise) 3b,b,3b,b

These four angles sum up to 360, so we have

3b+b+3b+b =8b = 360 \iff b = \dfrac{360}{8} = 45

And since a and b were the same, a is also 45 degrees.

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