Question

need a quick answer please and thanks

Answer 1

Answer:

1=90°

2=45°

3=45°

Step-by-step explanation:

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Answer 2

Answer:

please i am confused for sometime

later i got the answer very easily

ok

Answer:

sum of all angle of a traingle is 180 degree

and

given triangle dce is an equilateral triangle

therefore

$< 1 + < 2 + < 3 = 180 \\ 3 \times ( < 1) = 180 \\ < 1 = 180 \div 3 \\ < 1 = 60 \\ < 1 = < 2 = < 3 = 60.....(angles \: of \: an \: equilateral \: traingle)$

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