Perpendicular Lines Notes

Thm 3-1: If 2 intersecting lines form congruent adjacent angles, then the lines are perpendicular.

Thm 3-2: If 2 sides of 2 adjacent acute angles are perpendicular, then the angles are complementary.

Thm 3-3: If one angle of a linear pair is a right angle, then the other angle is a right angle.

STATE THE REASON FOR THE CONCLUSION

Example 1:

Given: Angle 1 is congruent to Angle 2

Conclusion: Measure of Angle 1 = measure of Angle 2.

Answer: Definition of Congruence

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