How can I ensure the edges are equally 90 degrees?
Md Ariful Islam
বিএসসি(সিএসই)
,
এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
If you want to know if an edge is 90 degrees, use the corner of a sheet of paper to check. You could also use a woodworker's triangle.
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