Classifying Angles by Size
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Angles on a Straight Line add up to 180°.
Angles on a Straight Line
1) Classifying Angles by Size (Definitions)
Adjacent Angles- angles that measure less than 90 degrees
Right Angles- angles that measure exactly 90 degrees
Obtuse Angles- angles that measure more than 90 degrees
Straight Angles- angles that measure exactly 180 degrees
2) Select box to "show orange", then complete the following tasks.
a) Show an "acute" orange angle and an "obtuse" green angle b) Show a green angle that is a "straight angle" c) Show an orange angle and green angle that are both "right angles" d) What do the green and orange angles add to? Give three examples.