When a Ruler Is Too Short

Document ID: 04_28_05_1
Date Received: 4/28/2005 Date Revised: 8/19/2005 Date Accepted: 8/25/2005
Grade Level: High School [9-12]
Curriculum Topic Benchmarks: M3.3.9, M3.3.11, M3.3.17, M3.4.3, M4.3.3, M4.3.7, M4.4.4, M4.4.6, S15.3.2, S15.3.3, S15.4.4
Subject Keywords: star distances, parallax, trigonometry, geometry, triangle, distance, angle, small angle approximation, estimation

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