relationships in geometry friday january 31st. objective for today. i understand where we are headed...
TRANSCRIPT
![Page 1: Relationships in Geometry Friday January 31st. Objective for today. I understand where we are headed in this unit. I can tell you what we will be covering](https://reader036.vdocument.in/reader036/viewer/2022080915/56649dd95503460f94acee91/html5/thumbnails/1.jpg)
Relationships in Geometry
Friday January 31st
![Page 2: Relationships in Geometry Friday January 31st. Objective for today. I understand where we are headed in this unit. I can tell you what we will be covering](https://reader036.vdocument.in/reader036/viewer/2022080915/56649dd95503460f94acee91/html5/thumbnails/2.jpg)
Objective for today.
• I understand where we are headed in this unit.• I can tell you what we will be covering in this
unit.• I know the vocabulary for section 1!
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3 sections to this unit
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Section 1: Area and Polygons
• Essential Question:• How can you find the area of an irregular
polygon using area formulas.• There will be four lessons in this section.– Area of Quadrilaterals– Area of Triangle– Solving Area Equations– Area of Polygons
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Section 2 Distance and Area in the Coordinate Plane
• Essential Question: • What steps might you take to solve a polygon
problem given the coordinates of its vertices?• There are two lessons in this section.– Distance in the coordinate plane– Polygons in the coordinate plane
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Section 3 Surface Area and Volume of Solids
• Essential Question:• How can a model help you to solve surface
area and volume problems?• There are 3 Lessons in this section.– Net and Surface Area– Volume of a Rectangular Prism– Solving Volume Equations
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Review Skills needed!• Inverse operation (Solving Equations)• Examples:• 7k=35 k is multiplied by 7• 7k=35 use the inverse operation, division 7 7 k = 5
K + 7 = 9 7 is added to kK + 7 – 7 = 9 – 7 use the inverse operation K = 2 subtraction
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Try a couple
• 9p = 54• P = 6• M – 15 = 9• M = 24• b/8 = 4• B = 32• Z + 7 = 23• Z = 16
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Area of Squares and rectangles
• Finding the area of a rectangle:• Formula:• A = length x width • A = lw • If we have a rectangle that is 7 ft tall and 4 ft
wide.• A = lw A = 7 x 4 • A = 28 ft squared
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Try one!
• A rectangle with a base of 9 inches and a height of 11 inches.
• What is the area?
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Vocabulary Review Words Section 1Polygon: (Poly)• Many sided figureHexagon: • Has 6 side and 6 anglesQuadrilateral: (Quad)• Has 4 sidesTriangle: (tri)• Has 3 sides and 3 angles
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More Vocabulary Review
• Square• Has 4 equal sides and two pair of parallel
sides. Has 4 right angles.• Rectangle• Has 4 right angles and two pair of parallel
sides.
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New Vocabulary Words Section 1
• Parallelogram:• A quadrilateral in which opposite sides are
parallel and congruent.• Trapezoid• A quadrilateral in which two sides are parallel.• Rhombus• A quadrilateral in all which side are congruent
and opposite sides are parallel.