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122_G4U5_WB˜ ˙—» ¿º 2011.3.30 2:55 PM ˘ ` 7 PDF_In 2540DPI 150LPI T
122-B4-1
The Sum of Angles
1. Write the sum of the angles in the blank.
Example a.
20 30 c.
b.
d. e.
122-B4-1
The Sum of Angles
1. Write the sum of the angles in the blank.
Example a.
20 30 c.
b.
d. e.
