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MATH UNIT 16

MATH UNIT 16. 4 TH GRADE. line rhombus quadrilateral line segment triangle A polygon with three sides is known as a ____ A part of a line that has one endpoint is a ___ A four-sided polygon in which opposite sides are parallel and all sides are the same length is a ____

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MATH UNIT 16

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  1. MATH UNIT 16 4TH GRADE

  2. line rhombus quadrilateral line segment triangle • A polygon with three sides is known as a ____ • A part of a line that has one endpoint is a ___ • A four-sided polygon in which opposite sides are parallel and all sides are the same length is a ____ • A _______ is a straight path of points that goes on without end in two directions.

  3. 13’ Find the area of each polygon. 8’ 2’ 5’ 5’ 16’ 9’ 3’

  4. 4” Find the perimeter of each polygon. 4” 6” 9” 7” 5” 2” 2” 6” 3” 3” 2” 2” 2”

  5. How do you classify angles using benchmark angles? An angle is a figure formed by two rays that have the same endpoint. That endpoint is also known as the vertex of the angle.

  6. Angles are usually measured in units called degrees. The symbol indicates degrees. You can use benchmark angles to classify angles.

  7. Benchmark angles are STANDARDS. You use benchmark angles to figure out the degrees of other angles. 180 90 45

  8. A 90 angle makes a square corner. A 45 angle is and angle that is open half as much as a 90 angle. A 180 angle is an angle that forms a straight line.

  9. You can use benchmark angles to estimate angle measures. • Less than 45 c. less than 90 • 45 d. 90

  10. Classify each angle.

  11. A roller coaster has a brace support that forms a square corner. What is the angle measure of the angle formed by the brace support?

  12. Classify each angle.

  13. Classify each angle.

  14. Classify each angle.

  15. Sonny drew a rectangle that has a length of 6 inches and a width of 4 inches. Describe a different rectangle with the same perimeter as Sonny’s. Now tell which rectangle has the greater area.

  16. The hands on a clock show that the time is 6:00 How can you classify the angle formed by the hands on the clock?

  17. Write an equation to represent: “three times a number is 15. Then solve for n.

  18. Ron drew an angle that is less than 45 degrees. Which of the following could NOT be its measure? • 12 degrees c. 41 degrees • 35 degrees d. 86 degrees

  19. A protractor is a tool that is used to measure and draw angles.

  20. Draw an angle with a measure of 360 degrees. Draw a ray and label the endpoint B and another point on the ray A. Place the protractor so the middle of the bottom edge is over the endpoint of the ray. Find the 0 mark on the protractor and place a point. Label it C. Draw ray BC.

  21. Draw an angle with a measure of 360 degrees. Draw a ray and label the endpoint B and another point on the ray A. Place the protractor so the middle of the bottom edge is over the endpoint of the ray. Find the 0 mark on the protractor and place a point. Label it C. Draw ray BC.

  22. Do the MATH

  23. Tina draws an angle that is a straight line. What is the measure of her angle? Draw it.

  24. Frederica made a 5 point star on her paper. Identify each angle she used.

  25. Brianna made 5 three-point shots in her first game and 3 three-point shots in her second game. She also made 4 two-point shots in each game and no one-point free throws in either game. How many total points did she score?

  26. Lottie is reading a book containing 3 chapters. The first chapter is 120 pages long. The second chapter is 136 pages long. There are 583 pages in the book. How many pages are in the third chapter?

  27. Look at the angles shown on the home plate used in baseball. Label each angle.

  28. The point where two streets cross each other forms four square corners. Draw a picture of the streets crossing each other and label each angle with the number of degrees.

  29. TRANSLATIONS What is one way to move a figure? A translation moves a figure up, down, left, or right. In this honeycomb, the hexagon is translated to the right. slide

  30. Which have been TRANSLATED?

  31. Which have translated?

  32. KITES How many sticks would you need to make 12 kites? If Alex made 2 kites and Kolby made 5 kites, how many sticks did they use in all?

  33. Which of the following best represents a translation? • An ice cube melting • A plant growing • A windmill spinning • A hockey puck sliding

  34. In this picture which shows a translation of the horse labeled X? V Z X W Y

  35. Translations are often called SLIDES…… Is this an example of a slide?

  36. REFLECTION What is another way to move a figure? A REFLECTION of a figure gives its mirror image.

  37. MIRROR IMAGE = REFLECTION

  38. Are these REFLECTIONS?

  39. When a figure is reflected, the size and shape of the figure DO NOT change! They are FLIPPED over. W F F W A A

  40. Which are examples of REFLECTIONS?

  41. Another name for a REFLECTION is a FLIP. Which are examples of Flips or Reflections?

  42. Flip - Flip - Flip Yes or No?

  43. Draw a REFLECTION.

  44. Draw a flip / reflection of each figure.

  45. Sharon can run five miles in fifty minutes. If she keeps this pace, how many miles can she run in sixty minutes?

  46. The Hall of Mirrors in the Palace of Versailles in France is 73 meters long. A guide posted at one end of the room walks in a straight line to the mirror at the other end, and then back to his post. How far in all did he walk?

  47. SYMMETRY What is a line of symmetry? A figure is SYMMETRIC if it can be folded on a line to form two congruent halves that fit on top of each other. The fold line is called a LINE OF SYMMETRY.

  48. A figure can have many lines of symmetry.

  49. Which have lines of symmetry?

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