How can i solve this and this and this and this?

DF = 3 , ∠B = 28° , ∠P = 105° , QR = 11.6 , ∠M=45°,LN = 8.5

Step-by-step explanation:

As ΔABC≅ΔDEF ,

DF = AC and ∠B = ∠E because corresponding parts of congruent triangles are equal.

∴DF = 3 and ∠B= 28°

In the next part,

as ΔLMN≅ΔPQR,

∠P = ∠L , QR = MN , ∠M = ∠Q , LN = PR as corresponding parts of congruent triangles are equal.

∴∠P = 105° , QR = 11.6 , ∠M = 45° , LN = 8.5

point m is on plane r