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# Chapter 8.1 8.4 review

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### Chapter 8.1 8.4 review

1. 1. Daily Homework Quiz For use after Lesson 8.2 1. What is an acute triangle? 2. Can a right triangle be isosceles?
2. 2. Daily Homework Quiz For use after Lesson 8.2 1. What is an acute triangle? 2. Can a right triangle be isosceles? ANSWER a triangle with three acute angles ANSWER yes
3. 3. 8.1 – 8.4 Review
4. 4. Essential Questions <ul><li>Why is it important to be able to identify congruent triangles in everyday life? </li></ul><ul><li>Where in real life can you use the properties of isosceles and equilateral triangles? </li></ul><ul><li>How are the relationships between lines and planes used in the real world? </li></ul><ul><li>What areas in the real world are properties of parallel lines important? </li></ul>
5. 5. Vocabulary Review A quick check on vocabulary from this unit.
6. 6. <ul><li>An angle that measures between 1 & 90 ° </li></ul><ul><li>The angles whose sum is 180 ° </li></ul><ul><li>An angle that measures exactly 180 ° </li></ul><ul><li>A triangle with exactly one 90 ° angle </li></ul><ul><li>A flat surface that extends infinitely </li></ul><ul><li>An angle that measures between 90 &180 ° </li></ul><ul><li>Has one endpoint and extends infinitely in one direction </li></ul>
7. 7. <ul><li>An angle that measures between 1 & 90 ° </li></ul><ul><li>The angles whose sum is 180 ° </li></ul><ul><li>An angle that measures exactly 180 ° </li></ul><ul><li>A triangle with exactly one 90 ° angle </li></ul><ul><li>A flat surface that extends infinitely </li></ul><ul><li>An angle that measures between 90 &180 ° </li></ul><ul><li>Has one endpoint and extends infinitely in one direction </li></ul>supplementary straight right plane obtuse ray
8. 8. <ul><li>8. A five-sided polygon </li></ul><ul><li>9. A 10-sided polygon </li></ul><ul><li>10. A triangle with 3  sides </li></ul><ul><li>11. A quadrilateral with 2 pairs of parallel sides </li></ul><ul><li>12. A triangle with no  sides </li></ul><ul><li>13. A quadrilateral with exactly one pair of parallel sides </li></ul>
9. 9. <ul><li>8. A five-sided polygon </li></ul><ul><li>9. A 10-sided polygon </li></ul><ul><li>10. A triangle with 3  sides </li></ul><ul><li>11. A quadrilateral with 2 pairs of parallel sides </li></ul><ul><li>12. A triangle with no  sides </li></ul><ul><li>13. A quadrilateral with exactly one pair of parallel sides </li></ul>pentagon decagon equilateral parallelogram scalene trapezoid
10. 10. <ul><li>14. A parallelogram with 4  sides </li></ul><ul><li>15. A quadrilateral with 4  90 degrees angles </li></ul><ul><li>16. Connects two vertices of a polygon that do not share a side </li></ul><ul><li>17. A six-sided figure </li></ul><ul><li>18. A seven-sided figure </li></ul>
11. 11. <ul><li>14. A parallelogram with 4  sides </li></ul><ul><li>15. A quadrilateral with 4  90 degrees angles </li></ul><ul><li>16. Connects two vertices of a polygon that do not share a side </li></ul><ul><li>17. A six-sided figure </li></ul><ul><li>18. A seven-sided figure </li></ul>rhombus Rectangle diagonal hexagon heptagon
12. 12. <ul><li>19. Two angles whose sum is 90 ° </li></ul><ul><li>20. Has two endpoints, can be measured, and is a part of a line </li></ul><ul><li>21. Angles formed when two lines intersect and are always congruent </li></ul>
13. 13. <ul><li>19. Two angles whose sum is 90 ° </li></ul><ul><li>20. Has two endpoints, can be measured, and is a part of a line </li></ul><ul><li>21. Angles formed when two lines intersect and are always congruent </li></ul>complementary Line segment vertical
14. 14. <ul><li>22. A line that crosses two or more lines </li></ul><ul><li>23. Lines (on same plane) that never intersect </li></ul><ul><li>24. Lines that meet at 90° angles </li></ul><ul><li>25. The point where two rays meet and form an angle </li></ul><ul><li>26. A many-sided figure </li></ul>
15. 15. <ul><li>22. A line that crosses two or more lines </li></ul><ul><li>23. Lines (on same plane) that never intersect </li></ul><ul><li>24. Lines that meet at 90° angles </li></ul><ul><li>25. The point where two rays meet and form an angle </li></ul><ul><li>26. A many-sided figure </li></ul>transversal parallel perpendicular vertex polygon
16. 16. <ul><li>27. A polygon with 8 sides </li></ul><ul><li>28. A polygon with all congruent sides and all congruent angles </li></ul><ul><li>29. A polygon that does not have all congruent sides or angles </li></ul>
17. 17. <ul><li>27. A polygon with 8 sides </li></ul><ul><li>28. A polygon with all congruent sides and all congruent angles </li></ul><ul><li>29. A polygon that does not have all congruent sides or angles </li></ul>octagon Regular polygon Irregular polygon
18. 18. <ul><li>Name a pair of: </li></ul><ul><li>Vertical angles </li></ul><ul><li>Corresponding </li></ul><ul><li>Alt. Interior </li></ul>1 4 2 3 5 8 6 7
19. 19. <ul><li>Name a pair of: </li></ul><ul><li>Vertical angles </li></ul><ul><li>Corresponding </li></ul><ul><li>Alt. Interior </li></ul>1 and 3, 2 and 4 5 and 7, 6 and 8 1 and 5, 2 and 6 3 and 7, 4 and 8 2 and 8, 3 and 5 1 4 2 3 5 8 6 7
20. 20. <ul><li>Name a pair of: </li></ul><ul><li>Alt. Exterior </li></ul><ul><li>Supplementary </li></ul>1 4 2 3 5 8 6 7
21. 21. <ul><li>Name a pair of: </li></ul><ul><li>Alt. Exterior </li></ul><ul><li>Supplementary </li></ul>1 and 7, 4 and 6 1 and 4, 4 and 3, 3 and 2, 1 and 2, 5 and 8, 8 and 7, 7 and 6, 6 and 5 1 4 2 3 5 8 6 7
22. 22. Find all angle measures 1 3 t 113  2 5 6 7 8 113  113  113 
23. 23. Find all angle measures 1 67  3 t 113  180 - 67 2 5 6 7 8 67  67  67  113  113  113 
24. 24. Homework <ul><li>Page 808 #1-11 </li></ul><ul><li>Test tomorrow! </li></ul><ul><li>All late work due tomorrow! </li></ul>