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9-1Developing Formulas forTriangles and Quadrilaterals9-1Developing Formulas forTriangles and QuadrilateralsPractice: Finding Measurements of Parallelograms2. Find the area of the parallelogram.Practice3. Find the perimeter and area of the rectangle.(x – 5)fth(x 2)ftHolt GeometryHolt Geometry9-1Developing Formulas forTriangles and Quadrilaterals9-1Practice: Finding Measurements of Trapezoids5. Find b2 of the trapezoid, in which A 231mm2.Developing Formulas forTriangles and QuadrilateralsPractice: Finding the Area of Kites6. Find the area of a rhombus.Holt GeometryHolt Geometry
9-1Developing Formulas forTriangles and Quadrilaterals9-2Practice: Finding Measurements of CirclesPractice: Finding the Area of Kites7. Find the area of the kite.Holt GeometryDeveloping Formulas forCircles and Regular Polygons1. Find the area of !K interms of π.Holt Geometry9-2Developing Formulas forCircles and Regular Polygons9-2Practice: Finding the Area of a Regular PolygonFind the area of each regular polygon. Round to the nearesttenth if necessary.5.Developing Formulas forCircles and Regular PolygonsPractice: Finding the Area of a Regular PolygonFind the area of each regular polygon. Round to the nearesttenth if necessary.6.5ft15inHolt Geometry2. Find the radius of a circle ifthe circumference is 18π cm.Holt Geometry
Microvilli are tiny protrusions in the intestinal wall that capture nutrients fromfood. Microvilli have a large perimeter-to-area ratio so that the food passes bya large amount of exposed surface. Find the ratio of the perimeter to the areafor each figure in Exercises 1–4. Round to the nearest hundredth.NameClass2.Date1.Developing Formulas forCircles and Regular PolygonsLESSON Practice:Finding the Area of a Regular Polygon9-29-3Practice B9-3 2Composite FiguresFind the area of each regular polygon. Round to the nearesttenth if necessary.Find the shaded area. Round to the nearest3.7. FT42 FT23.!"# %4.1. &"# % FT FT1215mmName122. FTPractice: Computing Area of Composite FiguresFind the shaded area of the composite figure. Round thetenth answerif necessary.to the nearest tenth if necessary.1.466CompositeFiguresDate36 mm Class4.18 mmPracticeB your answers5. Based onto Exercises 1–4, sketch what you think a short section27 mm18 mmHolt GeometryLESSON9-3Holt Geometry'&"(#54 mmCompositeFiguresof intestinalwall with several microvilli would look like.Find the shaded area. Round to the nearest tenth if necessary.!"# %2.1. FT FT9-35. MComposite Figures6. FT!")*&"# % M FT MPractice: Computing Area of Composite Figures FT M9-3Composite Figures ")*Practice: Computing Area of Composite FiguresIn Exercises 6 and 7, find each shaded area of Findthe,")*regular polygons. Round to thethe shaded area of the composite figure. Round theanswer to the nearest tenth if necessary.nearest hundredth.36 mm18 mm3.4.6.7.8. 7.18 mmFind the shaded area of the composite figure. Round theanswer to the nearest tenth if necessary.3.2.54 mm27 mm1'&"(#!,"-( !,"-(&."(,"-(&."(!,"-(5. MHolt Geometry M6.!")*Holt Geometry M9. Osmanbroke the unusuallyshaped6–9picturewindow8. The regularpolygonsin Exerciseswereinscribed in circles. Now imagine regular gonsthat are circumscribed around circles. Describethe trend in the difference M1"/0dimensions of the window. Replacement glass,")*
9-39-3Composite FiguresPractice4. Find the area of the shape. Round your answer to thenearest hundredth.Holt GeometryPractice: Estimating Area5. Use a composite figure to estimate the shaded area. Thegrid has squares with side lengths of 1 ft.Holt Geometry9-69-6Geometric Probability2. Use the spinner to find the probability of each event.a) the pointer landing on green or blueGeometric ProbabilityPracticePractice4. Find the probability that a point chosen randomly inside therectangle is in the trapezoid. Round to the nearest hundredth.b) the pointer NOT landing on greenHolt GeometryComposite FiguresHolt Geometry
each shape. Round to the nearest hundredth.9. the square10. the triangle14 cm7 in.2 in.5 cm4 in.13 cm12 cm9-69-6Geometric ProbabilityGeometric ProbabilityPracticePractice5. Find the probability that a point chosen randomly inside therectangle is NOT landing on a square. Round to the nearest11. the circlehundredth.6. Find the probability that a point chosen randomly inside therectanglein the regular pentagon. Round to the nearest12. theregularispentagonhundredth.10 ft MM MM8 ft4 ft MMHolt GeometryHolt GeometryCopyright by Holt, Rinehart and Winston.All rights reserved.47Holt Geometry
Holt Geometry 9-1 Developing Formulas for Triangles and Quadrilaterals Practice: Finding the Area of Kites 7. Find the area of the kite. Holt Geometry 9-2Developing Formulas for Circles and Regular Polygons 1. Find the area of !K in terms of π. Practice: Finding Measurements of Circles 2.
