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123_G4U6_WB˜ ˙—» ¿º 2011.3.30 5:31 PM ˘ ` 1 PDF_In 2540DPI 300LPI T
123-B1-1
Acute Angles, Right Angles, and Obtuse Angles (1)
1. Look at each angle and write whether it is an acute angle, right angle, or
obtuse angle.
Example
A right angle is 90 , and an acute angle is less than 90 . An obtuse angle
is greater than 90 and less than 180 .
a. b. c.
d. e. f .
g. h. i .
123-B1-1
Acute Angles, Right Angles, and Obtuse Angles (1)
1. Look at each angle and write whether it is an acute angle, right angle, or
obtuse angle.
Example
A right angle is 90 , and an acute angle is less than 90 . An obtuse angle
is greater than 90 and less than 180 .
a. b. c.
d. e. f .
g. h. i .
