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Chapter 3

Chapter 3. Name the following angles:. 5. 6. Corresponding Angles (corr s ). If lines are parallel, then corr s are _______. If lines are parallel, then corr s are congruent :. (. (. Name the following angles:. 1. 2. Alternate Interior Angles (alt-int s ).

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Chapter 3

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  1. Chapter 3

  2. Name the following angles: 5 6

  3. Corresponding Angles(corr s)

  4. If lines are parallel,then corr s are _______

  5. If lines are parallel,then corr s are congruent: ( (

  6. Name the following angles: 1 2

  7. Alternate Interior Angles(alt-int s)

  8. If lines are parallelthen alt-int s are ________

  9. If lines are parallelthen alt-int s are congruent: ( )

  10. Name the following angles: 1 2

  11. Same-Side Interior Angles(s-s int s)

  12. If lines are parallel then s-s int s are _________

  13. If lines are parallelthen con-int s are supplements: 1 2 0 m 1 + m 2 = 180

  14. A(n) __________ triangle has no congruent sides

  15. A scalene triangle has no congruent sides

  16. A(n) _________ triangle has at least 2 congruent sides.

  17. An isosceles triangle has at least 2 congruent sides.

  18. The congruent sides of an isosceles triangle are called _________.

  19. The congruent sides of an isosceles triangle are called legs.

  20. A(n) __________ triangle has 3 congruent sides

  21. An equilateral triangle has 3 congruent sides

  22. A(n) __________ triangle has 3 angles less than 90 0

  23. An acute triangle has 3 angles less than 90 0

  24. always, sometimes or never?An equilateral triangle is__________ an isosceles triangle

  25. An equilateral triangle isalways an isosceles triangle

  26. always, sometimes or never?An isosceles triangle is________ an equilateral triangle

  27. An isosceles triangle issometimes an equilateral triangle

  28. Name the sides:

  29. hypotenuse leg leg

  30. The sum of the interior angles of ANY triangle = ________ 0

  31. The sum of the interior angles of ANY triangle = 180 0 2 0 m 1 + m 2 + m 3 = 180 1 3

  32. m 4 = ______ + _______ 2 1 3 4

  33. m 4 = m 1 + m 2 80 40 60 120

  34. Is the following polygon convex or concave?

  35. concave

  36. Always, sometimes or never? • 1. A triangle is ___________ convex. • 2. A quadrilateral is __________ convex.

  37. 1. A triangle is always convex.2. A quadrilateral is sometimes convex:

  38. A regular polygon is _________ and ___________.

  39. A regular polygon is equilateral and equiangular

  40. The INTERIOR angles of a convex polygon total ________.

  41. The INTERIOR angles of a convex polygon total (n – 2)180 number of sides

  42. The EXTERIOR angles of a convex polygon total ________ 0

  43. The EXTERIOR angles of a convex polygon total 360 0

  44. Find the slope using the Slope Formula: A (x1 , y1) B (x2 , y2)

  45. y1 – y2 rise x1 – x2 run Slope (m) =

  46. State the slope: y = 1/3x + 4

  47. y = 1/3x + 4 Slope = 1/3

  48. Parallel lines have the _______ slope.

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