Coopay Large Triangle Ruler Set Square, 30/60 and 45/90 Degrees

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Coopay Large Triangle Ruler Set Square 30/60 and 45/90 Degrees

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Large triangle ruler set: come with a 6 inch 45/ 90 degrees triangle ruler and a 9 inch 30/ 60 degrees one High-quality material: the set square is

Coopay Large Triangle Ruler Set Square, 30/60 and 45/90 Degrees, Circular Hollow

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Coopay Large Triangle Ruler Set Square, 30/60 and 45/90 Degrees

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Types of Angles A right angle has a measure of 90 degrees. An acute angle has a measure of less than 90 degrees. An obtuse angle has a measure greater. - ppt download