Download 1. Two angles are

Math 8
Notes 6.1 Classify angles.
Name ________________________
Date: _____________ Block: ____
1. Two angles are ______________ if they have: a common side,
a common vertex (corner point), and
don't overlap.
These ARE Adjacent Angles
they share a vertex and a side
NOT Adjacent Angles
NOT Adjacent Angles
they only share a vertex, not a side they only share a side, not a vertex
2. Two Angles are ________________________ if
3. Two Angles are ________________________ if
they add up to 90 degrees (a Right Angle).
they add up to 180 degrees
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"C" of Complementary stands for "Corner"
(a Right Angle), and
"S" of Supplementary stands for "Straight" (180 degrees is a straight line)
4. _______________ angles are the angles opposite each other when two lines cross
Vertical angles are equal:
"Vertical" in this case means they share the same Vertex, not the usual meaning of up-down.
Examples: Find the unknown value in the figure