Angles formed by opposite rays. Angles that share a common side and a common vertex, but have no...
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Transcript of Angles formed by opposite rays. Angles that share a common side and a common vertex, but have no...
Angles formed by opposite rays.
Angles that share a common side and a common vertex, but have no common interior points.
Two angle whose measures have a sum of 90 degrees.
or
Two angles whose measures have a sum of 180 degrees.
or ?135
Name a pair of vertical angles.
Name a pair of adjacentAngles.
Name a pair of complementary angles.
Name a pair of supplementary angles.
When looking at a diagram, we can conclude:
Vertical angles
Adjacent angles
Adjacent supplementary angles
Angles or segments are congruent
Angles are right angles
Lines are parallel or perpendicular
(unless there are marks that give this information)
Draw two intersecting lines.
Number the angles as shown.
Use a protractor to measure each angle.
Make a conjecture about vertical angles.
If two angles are complementary to the same angle (or congruent angles), then the two angles are congruent.
If two angles are supplementary to the same angle (or congruent angles), then the two angles are congruent.
All right angles are congruent.
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