Answer:
All four options are correct.
Step-by-step explanation:
Option 1
m∠DPQ = m∠FQB = 90° [Corresponding angles theorem]
By the converse property of corresponding angles theorem,
CD║EF
Since, angle between AB and CD is 90°,
AB⊥CD
True
Option 2
Since, angles between AB and EF is 90°, both will be perpendicular.
AB ⊥ EF
AB ⊥ CD
True
Option 3
CD║EF and AB ⊥ EF
True
Option 4
CD║EF, AB ⊥ CD and AB ⊥ EF
True
Therefore, all options are correct.
Answer:
Step-by-step explanation:
4) You just have to find the lcm of the denominators
a) lcm(4,3,6)=4*3=12
b) I don't know the name of the property but it is :
"We can multiply the two members of an equality by the same non-zero number, we obtain an equality. "
5)