Lesson 10-7 Pages 446-450 Polygons and Tessellations.
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Transcript of Lesson 10-7 Pages 446-450 Polygons and Tessellations.
Lesson 10-7 Pages 446-450
Polygons and Tessellations
What you will learn!
How to classify polygons and determine which polygons can form a
tessellation.
PolygonPolygon NonagonNonagonPentagonPentagon DecagonDecagonHexagonHexagon Regular polygonRegular polygonHeptagonHeptagon TessellationTessellationOctagonOctagon
What you really need to know!
Link to Pre-Made Lesson
Example 1:
Determine whether the figure is a polygon. If it is, classify the polygon and state whether it is regular. If it is not a polygon, explain why.
Not a polygon
Has curves
Example 2:
Determine whether the figure is a polygon. If it is, classify the polygon and state whether it is regular. If it is not a polygon, explain why.
Hexagon
Not Regular
Example 3:
Find the measure of each angle of a regular heptagon. Round to the nearest tenth of a degree.
5 x 180
900°
900 ÷ 7
128.6°
Example 4:
Ms. Pena is creating a pattern on her wall. She wants to use triangles with angles 120°, 30°, and 30°. Can Ms. Pena create a tessellation with these triangles?
The sum of the measures of the angles where the vertices meet in a tessellation is 360°. Since 360° is divisible by both 30° and 120°, the polygons can be arranged in a tessellation.
Page 448
Guided Practice
#’s 4-7
Pages 446-448 with someone at home and study
examples!
Read:
Homework: Page 449-450
#’s 8-28 all
#’s 32-45 all
Lesson Check 10-7Chapter Test Preparation
Page
589
Lesson 10-7
Study Guide and Review
Pages
462-464
#’s 6-22(Odd answers in back of book)
Prepare for Test!
Pages
465
#’s 3-14, 16
Prepare for Test!
Pages
466-467
#’s 1-16