Download Angles - Miss Stasiak

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Angles
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Do Now
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On a separate piece of paper (to be handed in) please
classify the following angles and explain how you know.
180°
34°
90°
164°
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Do Now
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On a separate piece of paper (to be handed in) please
classify the following angles and explain how you know.
180°- straight angle because straight angles have a measure
of exactly 180 degree
34° - acute angle because the angle measures less then 90
degrees
90°- right angle because it measures exactly 90 degrees
164°-obtuse angle because it measures between 90 degrees
and 180 degrees
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Homework Review
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Questions?
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Comments
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Concerns?
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Complementary Angles
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Complementary Angles- angles that are next to each other
and add up to 90°
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Which are Complementary Angle?
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Which are Supplementary Angles?
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Supplementary Angles-when two angles add up to 180
degrees
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Which are Supplementary?
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What is the missing measure?
To find the missing measure we need to follow these
steps:
1. Identify as complementary or supplementary
2. Subtract
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Find the Missing Measure
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Find the Missing Measure
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Find the Missing Measure
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Find the Missing Measure
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Let’s Practice
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Let’s Practice
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Time to Practice
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Work on the following hand outs!
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Time to Practice
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Find a partner and work on the following task cards!
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Before You Go!
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Draw and Label:
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An acute angle
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A right angle
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An obtuse angle
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Complementary Angles
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Supplementary Angles
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Geometry
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Where do we see shapes in everyday life?
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Geometry
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Rays
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Lines
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Line Segments
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Rays
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A line with a start point but no end point
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Rays
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To name a ray you use the two outermost points and put an
arrow above the points
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XY
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Name the following Rays
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Lines
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To name a line you use the outermost point
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Indicates by the arrows on both sides
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Lines
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A straight series of points that has no start point or not end
point and put a line with arrows above it
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PQ
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Name the following Lines
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Line Segments
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Straight and similar to a line but have a start point and end
point
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Line Segments
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To name a line segment you use the outermost points and put
a line above the points
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AB
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Name the following Line Segments
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Which is which?
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Practice!
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Please complete the following handout!
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Before you go!
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Draw and Name:
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A ray
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A line segment
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A line