2.5 Angle Relationships
Investigation #1
1. Use the angle tool to measure one linear pair of angles in the diagram below.
2. Use the arrow tool the click and drag point D to change the angle measures.
3. Complete the questions below the figure based on your observations.
Use this figure for Investigation #1 and Investigation #2.
Observation
Which of the following statements is always true about the linear pair of angles?
C-1 The Linear Pair Conjecture
If two angles form a linear pair, then they are _____.
Investigation #2
1. Use the arrow tool to select and then delete one of your 2 angle measures.
2. Use the angle tool to measure the angle that is vertical to the angle measure that is left.
3. Click and drag point D to change the angle measures.
4. Complete the questions below based on your observations
Observation
Which of the following statements is always true about the pair of vertical angles?
C-2 Vertical Angles Conjecture
If two angles are vertical angles, then they are _____.