First hour Review Triangles Second hour Triangles Distance Third hour Circles.
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Transcript of First hour Review Triangles Second hour Triangles Distance Third hour Circles.
![Page 1: First hour Review Triangles Second hour Triangles Distance Third hour Circles.](https://reader030.fdocuments.net/reader030/viewer/2022032606/56649eb05503460f94bb5daa/html5/thumbnails/1.jpg)
First hourReview
Triangles
Second hour
TrianglesDistance
Third hourCircles
Agenda for today
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Where did the SIA formula come from? (“Why do we subtract 2 from n?”)
Your questions
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“Are there names for 13-sided polygons and onward?”
Tridecagon (13)Icosagon (20)Chiliagon (1000)Myriagon (10,000)Megagon (1,000,000)Apeirogon (infinite)
Your questions
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Hand back check-in forms so folks can see the feedback
Complete FIRST PROBLEM SET
Your questions
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Nature by numbershttp://www.youtube.com/watch?v=kkGeOWYOFoA&feature=related (no need to mute the music)
Quick video…
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Fibonacci spirals
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What are the different types?
Topic: Triangles
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Isosceles Right Scalene Equilateral
Triangles (continued)
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SIA?Area:
Perimeter:
(Complete SECOND PROBLEM SET)
Triangles (continued)
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Uses of right triangles
Babylon – right angles from rope
Distance formula for a line (more on this in a few slides)
Triangles (continued)
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Right triangles’ side lengths obey the Pythagorean Theorem:
Triangles (continued)
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The distance formula (for any line!) is based on the Pythagorean Theorem
(Complete THIRD PROBLEM SET)
Triangles (continued)
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Similar triangles…
Have the same angle sizes in the same order
Have corresponding sides whose ratios are equal
Complete FOURTH PROBLEM SET
Triangles (continued)
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Identify types of trianglesFind missing interior anglesFind areaFind perimeter
Find lengths of missing sides of similar triangles
Triangles TASKS
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Find length of a line on a coordinate plane (using the distance formula)
And now, a toast to triangles…
Lines NEW TASK
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Are made up of points that are the same distance from a center point
Have a radius (center to outside)
Have a diameter (all the way across)
Have a circumference (around outside)
Topic: Circles
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Free throws – 1 hour recordFirst clip: http://www.youtube.com/watch?v=718ldCsCECk&NR=1
Second clip: http://www.youtube.com/watch?v=nLemV48N258
Third clip: http://www.youtube.com/watch?v=E6ziQNSETe4
Area:
Complete FIFTH PROBLEM SET
Circles (continued)
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Clip: http://www.youtube.com/watch?v=hDvaU-GyIYE
Circumference:
(Complete SIXTH PROBLEM SET)
Circles (continued)
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Find area
Find circumference
Find radius, diameter
Circles TASKS
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Complete the REVIEW SETS
Do your check-in
Reminders:EXAM, Thursday August 6PROJECT, Tuesday August 17
For the rest of the meeting…