warm up! what kind of polygon am i? this should take you 10 seconds…
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The WørdTRANSCRIPT
Warm up!What kind of polygon am I?
This should take you 10 seconds…
For your exams…The average was a %...The median was a %...
…and a kiddos haven’t taken it yet…
The Wørd
Section 8.1Classifying Polygons
Convex PolygonsPolygons are convex if their extended sides do not pass
through the interior.
It’s great to be back folks…
Concave PolygonsPolygons are concave if their
extended sides do pass through the interior.
…I mean really…
What kind of polygon am I?…it’s truly an honor.
A polygon is equilateral if all it’s sides are congruent.
3
I have had enough…
A polygon is equiangular if all it’s angles are congruent.
…of the sleeping in…
A regular polygon is both equilateral and equiangular.
5
…hanging out with my friends…
Round 2!
…playing video
games…
Round 2!
…and doing whatever I
wanted.
Round 2!33
3 3
This is where it’s at…
Round 2!
…teaching limits…
Round 2!
…and geometry…
Section 8.2Angles in Polygons
The Polygon Interior Angles TheoremThe sum of the measures of the
interior angles of a convex polygon with n sides is 180(n-2).
…to kids that would rather be doing…
Find the measure of the missing interior angle.
120
111100
88
…any of the things I just mentioned.
Find the measure of the missing interior angle.
130
150
122100
80
To make matters worse…
The Polygon Exterior Angles TheoremThe sum of the measures of the
exterior angles of a convex polygon is 360 degrees.
…I bet it’s sunny and nice out right now.
Find the measure of the missing exterior angle.
110
7199
Which means…
Find the measure of the missing exterior angle.
6860
90
65
…you probably would just simply like to be
outside.
Solve for x.
8x-2121
72
89
So I think I’ll just give
up…
Solve for x.
6x111
59100
Find the measure of an interior angle of the regular polygon.
Find the measure of an interior angle of the regular polygon.
And your homework!8.1: 10-21, 33-38
8.2: 17-25