1. Tools of Geometry Measuring and Vocabulary

2. Measuring Line Segments – use a ruler Always use centimeters Round to the nearest tenth Angles – use a protractor Round to nearest degree http://www.mathsisfun.com/geometry/protractor-using.html

3. Vocabulary

4. Make a table in your notes WordDefinitionPicture

5. WordDefinitionPicture Congruent

6. WordDefinitionPicture Congruent2 figures with the same shape and size

7. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angle

8. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o

9. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right Angle

10. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o

11. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse Angle

12. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o

13. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles

14. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle)

15. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles

16. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o

17. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles

18. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles 2 angles that add up to 180 o

19. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles 2 angles that add up to 180 o Linear Pair

20. WordDefinitionPicture Congruent2 figures with the same shape and size Acute angleAn angle less than 90 o Right AngleAn angle equal to 90 o Obtuse AngleAn angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles 2 angles that add up to 180 o Linear Pair 2 angles that are adjacent and supplementary

21. WordDefinitionPicture Congruent 2 figures with the same shape and size Acute angle An angle less than 90 o Right Angle An angle equal to 90 o Obtuse Angle An angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles 2 angles that add up to 180 o Linear Pair 2 angles that are adjacent and supplementary Vertical Angles

22. WordDefinitionPicture Congruent 2 figures with the same shape and size Acute angle An angle less than 90 o Right Angle An angle equal to 90 o Obtuse Angle An angle greater than 90 o Adjacent angles 2 angles next to each other (share a leg in middle) Complementary Angles 2 angles that add up to 90 o Supplementary Angles 2 angles that add up to 180 o Linear Pair 2 angles that are adjacent and supplementary Vertical Angles 2 non-adjacent angles formed by intersection of 2 straight lines (vertical angles are congruent!)

23. Example What type of angles are: 1 and 2? 1 and 3? 7 and 8? 2 and 4?

24. Example - Find x

25. Example - Find m ABD

26. Last one! Find x