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Angles of Polygons
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Slide 1:
Slide
Mathematics
Secondary Education
This lesson contains
33 slides
, with
interactive quizzes
and
text slides
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Items in this lesson
Slide 1 - Slide
What can you observe from the following pictures?
Slide 2 - Slide
What can you observe from the following pictures?
Slide 3 - Slide
What can you observe from the following pictures?
Slide 4 - Slide
What can you observe from the following pictures?
Slide 5 - Slide
What can you observe from the following pictures?
Slide 6 - Slide
What can you observe from the following pictures?
Slide 7 - Slide
The pictures show different kinds of polygons. And the angles on the polygons were emphasized.
Slide 8 - Slide
The angles will be shown on the next slide.
Slide 9 - Slide
Slide 10 - Slide
For a short review, what is a polygon?
Slide 11 - Slide
Slide 12 - Slide
Slide 13 - Slide
Triangle
Quadrilateral
Pentagon
Hexagon
etc.
Slide 14 - Slide
Going back with the pictures again, What forms an angle?
Slide 15 - Slide
Slide 16 - Slide
From that definition, how will you define angle in a polygon?
Slide 17 - Slide
Slide 18 - Slide
Two types of angles in a Polygon:
Interior Angle
Exterior Angle
Slide 19 - Slide
Slide 20 - Slide
Slide 21 - Slide
Measurements of the interior and exterior angles
Slide 22 - Slide
Slide 23 - Slide
Slide 24 - Slide
ACTIVITY
Slide 25 - Slide
Define angle.
Slide 26 - Open question
What are the two types of angles in a polygon? Choose one only.
A
interior angle
B
complementary angle
C
supplementary angle
D
exterior angle
Slide 27 - Quiz
It is the angle formed between the line extended and the side adjacent to side that is extended.
A
complementary angle
B
exterior angle
C
supplementary angle
D
interior angle
Slide 28 - Quiz
It is the angle formed between two adjacent sides of a polygon and is found inside the polygon.
A
exterior angle
B
interior angle
C
supplementary angle
D
complementary angle
Slide 29 - Quiz
If an interior angle measures 88 degrees, find the measurement of its exterior angle.
Slide 30 - Open question
If an exterior angle measures 126 degrees, what would be the measurement of its interior angle?
Slide 31 - Open question
State the relationship between the measurement of interior angle and exterior angle of a polygon.
Slide 32 - Open question
END
Slide 33 - Slide
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