Follow these instructions to unclog your air conditionerâs drain line. 1  Step 1: Get out your wet/dry vacuum. 2  Step 2: Find the main drain line outside of your home. 3  Step 3: Connect the wet/dry vacuum hose to the main drain line.  Step 4: Check the vacuum for algae water and other debris.
The base angles theorem states that if the sides of a triangle are congruent (Isosceles triangle)then the angles opposite these sides are congruent.
If the base angles of a triangle are equal then the triangle is isosceles (Prop I.6) 1 2 1 2 4 3. 2. Theorem: The base angles of an isoscel es trapezoid are equal Introduction: A famous theorem of geometry proves the result that the base angles of an isosceles triangle are equal.ince angle BAD (angle 5) also equals angle BEA (angle 6), angle BAD (angle 5) equals angle CDA (angle 7) and the result follows. Conclusion: Therefore the base angles of an isosceles trapezoid are equal. QED.