90 degree angle
quot;Learn how to construct a 90degree angle using just a compass and a straightedge in this step-by-step tutorial. Perfect for students studying advanced geomet
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Product Name : Square Ruler;Material : Metal Measure Range : 0-30cm / 0-12 inches0-20cm/0-8 inches;Total Size : 31.7 x 21.5 x 1.8cm /12.5 x 8.5 x
uxcell Metal 90 Degree Angle 0-30cm 0-20cm Scale Square Ruler
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