# Angles of Polygons

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Slide 1: Slide
MathematicsSecondary Education

This lesson contains 33 slides, with interactive quizzes and text slides.

## 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 10 -Slide

For a short review, what is a polygon?

Triangle
Pentagon
Hexagon
etc.

#### Slide 14 -Slide

Going back  with the pictures again, What forms an angle?

#### Slide 16 -Slide

From that definition, how will you define angle in a polygon?

#### Slide 18 -Slide

Two types of angles in a Polygon:
Interior Angle
Exterior Angle

#### Slide 21 -Slide

Measurements of the interior and exterior angles

ACTIVITY

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.

END