Geometry All Around Us

Gabby Rooney

1. Are the triangles below congruent? If so, by what postulate?

2. Is the angle acute, obtuse, or right?

3. What is the relationship between the two lines?

4. What is the relationship between Angle 5 and Angle 6

5. What is the value of x?

6. Are the triangles below congruent? If so, by what postulate?

7. What is the relationship between Angle 1 and Angle 3?

8. Are the triangles congruent? If so, by what postulate?

9. What is the value of x?

10. Find the rest of the angles' values.

ANSWERS:

1. yes, SAS

2. acute

3. perpendicular

4. supplementary angles

5. x=85

6. No

7. linear pair

8. No

9. x=60

10. <2=70 <3=70 <4=110 <5=110 <6=70 <8=110

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