Complete Using a Protractor (pink) Do you remember the ...
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Warm-Up Complete Using a Protractor (pink) ◦ Do you remember the types of angles from middle school? ◦ TRY YOUR BEST!
Transcript of Complete Using a Protractor (pink) Do you remember the ...
Warm-Up
Complete Using a Protractor (pink)
◦ Do you remember the types of angles from middle school?
◦ TRY YOUR BEST!
Lesson 1.2 HW Review
Lesson 1.2 HW Review
15. 16.
Lesson 1.3 HW Review
Lesson 1.3 HW Review
Open-Note Quiz 1c
You have 15 minutes.
When you finish, bring your quiz up front and pick up today’s notes.
Lesson 1.4: Polygons
In this section we will answer…
What is the definition of a polygon?
What terms do I need to know when dealing with polygons?
What is the definition of a polygon?
Polygons Not Polygons
Polygon
a closed figure in a plane that is…
◦ formed by connecting line segments
◦endpoint to endpoint
◦with each segment intersecting exactly two others
Parts of a Polygon
Diagonal - a line segment that connects two nonconsecutive vertices
Consecutive Sides
Consecutive Angles
Consecutive Vertices
Consecutive
Following continuously
In unbroken sequence
Types of Polygons
Convex Concave
No diagonals go
outside the
polygon
At least one diagonal
goes outside the
polygon
Convex/Concave Practice
Take a few minutes to complete the Convex and Concave Polygons worksheet.
Be prepared to share your answers!
Naming Polygons
H
S
O
U
E
When are Polygons Congruent?
Two polygons are congruent if and only if they are exactly the same ____________ and ____________.
This means ALL parts MUST have a match!
shape
size
Perimeter
The sum of the length of the sides
Equilateral Polygon
Equiangular Polygon
Regular Polygon
- polygons in which all sides have equal lengths
- polygons in which all angles have equal measures
- polygons that are both equilateral
and equiangular
- That means all sides are congruent
and all angles are congruent!
Special Polygons
Complete the Identifying Regular Polygons Worksheet.
Be prepared to share your answers!
Special Polygons Practice
Almost Finished…
Take out your agenda – copy down dates
◦ Quiz – TOMORROW (Midpoint)
◦ Test
Homework
◦ Practice Worksheet 1.4
Stay in your seat until the bell rings!
◦ (Don’t forget to push in your chair.)
