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There is an L-shape wooden frame.We need to know whether L is exactly a right angle. How can we do it, with only a ruler/scale and a pencil.?

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  • There is an L-shape wooden frame.We need to know whether L is exactly a right angle. How can we do it, with only a ruler/scale and a pencil.?


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... but we don't need to understand that idea right ... you can see that there is only one angle where ... the building stronger, exactly as we have ...
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Positive: 50 %
Right Angled Triangles. ... There are two types of right angled triangle: ... The "3,4,5 Triangle" has a right angle in it.
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Positive: 47 %

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