Question

What did this sign refers
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Answer 1

Hey mate ,

This sign stands for congurency .

Here it is used to say that one triangle is congurent to another .

When two triangles are congruent they will have exactly the same three sides and exactly the same three angles.

The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there.

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Answer 2

it refers

"approximately equal to "

Step-by-step explanation:

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