Approximating Length of Circle Arc using Straight Line Small 320×241 Medium 640×481 Large 1024×770 Download Tiff Original 2400×1804 | (179.9 KB) Description "At A draw the tangent AD and Chord AB produced. Lay off AC equal to half the chord AB. With center C and radius CB draw an arc intersecting AB at E, then AE will be equal in length be to the arc AB." —French, 1911 Keywords Approximating Length of Circle Arc using Straight Line, circle arc length, Measuring Arc Length of Circle Galleries Geometric Constructions Source: French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
