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Mon 11/11
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Solve for all variables shown: Boot-Up 11.11.13 / 6 min.
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3. MAKING CONNECTIONS 1. TRIG RATIOS 2.
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Tue 11/12
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In the figure at right, line m is parallel to line n, and line t is a transversal crossing both m & n. Which of the following lists has 3 angles that are all equal in measure? A. ∠ a, ∠ b, ∠ d B. ∠ a, ∠ c, ∠ d C. ∠ a, ∠ c, ∠ e D. ∠ b, ∠ c, ∠ d E. ∠ b, ∠ c, ∠ e © 2004 ACT, Inc. All rights reserved.
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Wed 11/13
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As shown in the figure at right, Δ ABC is isosceles with the length of AB equal to the length of AC. The measure of ∠ A is 40° and points B, C, and D are collinear.* What is the measure of ∠ ACD ? A. 70° B. 80° C. 110° D. 140° E. 160° * All in a straight line. © 2004 ACT, Inc. All rights reserved. Boot-Up 11.13.13 / 6 min.
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Find Lesson 8.1.1 8.1.1 8-1 8-2 8-3 8-4 8-5
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In this chapter, you will learn: About special types of Polygons, such as Regular & non ‑ Convex polygons. How the measures of the interior and exterior angles of a Regular Polygon are related to the number of sides of the polygon. How the areas of similar figures are related. How to find the area and circumference of a circle and parts of circles and use this ability to solve problems in various contexts. See p.476 1)TTW: H/O spoons
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TSW: Read p.473 Intro paragraph.
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Today’sObjective: * SWBAT = S tudent W ill B e A ble T o 8.1.1: SWBAT answer the following ?s: 1)How can I use the # of sides of a Regular Polygon to find the measure of the central ? 2)What type of is needed to form a Regular Polygon? 3)What is a Convex Polygon?
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If you understand that any problem, no matter how big or complicated, and no matter the subject area – whether academic or real-life – can be broken down into smaller parts that you can handle, then that problem can be solved. OK, but what’s in it for me? TSW: Read 8-1 1 st paragraph.
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A B C 26 24 10 20 12 23.32 30 12 32.31 120u 2 180u 2
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8-1
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8-1a 1) Can you determine the measure of any of these s? 2) What kind of shape is being formed in the center? 3) How many degrees are there in a circle? 4) Which of these would you call the central s of the pinwheel?
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8-1b 1) What is this polygon called? 8-1b 8-1c TSW close textbook. TTW call & response
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8-2 8-1c TSW close textbook. TTW call & response Rules for Pinwheels: 1)Corresponding s must be in corresponding positions. 2)Vertices must meet in center. 3) s must be adjacent to each other. (No gaps, no overlaps.)
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8-3 Central # s Used Pinwheel or Polygon? Name of Shape Measure of Central s 1) 1 2) 2 3) 3
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Angle 1: 3 s Angle 2: 9 s Angle 3: 18 s Pinwheels & Polygons: 1-2-3 Angles
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Pinwheels & Polygons: A-B-C Angles Angle C: 5 s Angle B: Not a Pinwheel! Angle A: 8 s
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Angle D: Not a Pinwheel! Angle E: 12 s Pinwheels & Polygons: D-E-F Angles Angle F: Not a Pinwheel!
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8-4a
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Thu 11/14
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What is the area of the shape below? Boot-Up 11.14.13 / 6 min. 10 5 8 2
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What is the area of the shape below? Boot-Up 11.14.13 / 6 min. 10 5 8 2
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Today’sObjective: * SWBAT = S tudent W ill B e A ble T o 8.1.1: SWBAT answer the following ?s: 1)How can I use the # of sides of a Regular Polygon to find the measure of the central ? 2)What type of is needed to form a Regular Polygon? 3)What is a Convex Polygon?
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Find Problem 8-4c. 8.1.1 8-4c 8-5
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ConvexNon-Convex Based on what you see, write a definition for a Convex Polygon. 8-4c
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Based on what you see, write a definition for a Convex Polygon. 8-4c
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Convex Polygon: The vertices of convex polygons “point outward,” while some of the vertices of non ‑ convex polygons “point inward.” 8-4c
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Angle E: 12 s Pinwheels & Polygons Angle 1: 3 s
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8-5 Which of the below s can be used to build a Convex Polygon? TTW H/O Tracing Paper
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To build a convex polygon, you must use s that are: 1)Isosceles 2) Have a central whose measurement is a factor (divides evenly into) 360 .
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Find Lesson 8.1.2 8.1.1 8-13 8-14 8-16 TSW Read 8.1.2 Intro Para
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Today’sObjective: * SWBAT = S tudent W ill B e A ble T o 8.1.2: SWBAT find the sum of the interior s of a polygon & will be able to apply this skill to solve problems.
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8-13 1)What is meant by “interior ? 2)How many interior s are there? 3)What does each interior measure? 4)What is the sum of the s? 5) Can you break this shape down into shapes whose sum you know?
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8-13 1)What is the sum of the s in a ? 2)How many s are there? 3)What is the sum of all the s of all 3 s ?
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8-13 1)What is meant by “interior ? 2)How many interior s are there? 3)What does each interior measure? 4)What is the sum of the s?
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8-13 1)What does each central measure? 2)What kind of s are these? 3)If the central measures ___, & these are ____ s, then what do the remaining s in the measure? 72 ? ?
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8-13 1)How many interior s are there? 2)What does each interior measure? 3)What is the sum of the s?
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# of Triangles Canst thou determine the formula to save us from the interminable torment of these infernal calculations ere the terrors of Ragnarok o’ertake us all?
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Verily, ‘tis: Well done, my Midgardian friends! Now to celebrate with a Frosty Flagon of Frost-Dragon’s Mead… ( n -2)180
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8-14b.
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8-14c. Ah! But that ‘tis but the merest of child’s play for a true algbebraic warrior (or geometric giant)! To prove thy mettle, canst thou find the sum of the interior angles of a 100 ‑ gon? Explain your reasoning.
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Fri 11/15
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The shape shown below is a Regular Heptagon. What is: 1) The measure of the sum of all its interior s? 2) The measure of each of its interior s? Boot-Up 11.15.13 / 6 min. a a a a a a a
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Today’sObjective: * SWBAT = S tudent W ill B e A ble T o 8.1.3: SWBAT: 1)Determine the measure of an interior & exterior of a Regular Polygon.
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Find Lesson 8.1.3 8.1.3 8-24 8-36 a,b,d 8-25 8-37 8-26 8-38 8-27
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8-24 a, b
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Formula to find measure of each Interior of a Regular Polygon, where n = # sides of polygon.
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8-25 If it’s a square, then it has 4 equal sides. If it has 4 equal sides, then it’s a square.
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8-25 If it’s a square, then it has 4 right angles. If it has 4 right angles, then it’s a square.
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8-26a
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A B C 26 24 10 20 12 23.32 30 12 32.31 Rectangle = 30 x 24 = 720 120u 2 180u 2
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y x I IVIII II
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