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124_G6U25_WB_˙—» ¿º 2011.6.23 3:32 PM ˘ ` 22
124-P4-2
3. Lines AB, AC, and CD are congruent. Find the unknown angle.
A
40
BC aD
4. A rectangular piece of tape is folded. Find the unknown angle.
a
70
124-P4-2
3. Lines AB, AC, and CD are congruent. Find the unknown angle.
A
40
BC aD
4. A rectangular piece of tape is folded. Find the unknown angle.
a
70
