Question

(i) If angle a=85 degree and angle b= 85 degree, then AB || CD
(ii) If angle b =89 degree and angle c=89 degree, then EF || GH
(iii) If angle a= 110 degree and angle b =110 degree, then AB || CD
(iv) If angle b= 90 degree and angle c= 90 degree, then EF || GH​

Answer 1

Answer:

1. If a and b are 85 degree then AB||CD , because angle a and angle b are corresponding angles and corresponding angles are equal in parallel lines.

2. If a and b are 89 degree then EF||GH , because angle b and c are alternate angles.

3. If a and b are 110 degree then AB||CD , because angle a nad b are corresponding angles .

4. If a and b are 90 degree then EF||GH , because angle a and b are alternate angles.

Step-by-step explanation:

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