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124_G6U25_WB_˙—» ¿º 2011.6.23 3:32 PM ˘ ` 20
124-P3-2
1. A rectangular piece of tape is folded. Find the unknown angle.
a
40
2. A rectangular piece of tape is folded. Find the unknown angle.
a
50
124-P3-2
1. A rectangular piece of tape is folded. Find the unknown angle.
a
40
2. A rectangular piece of tape is folded. Find the unknown angle.
a
50
