Question

If ABC DEF, and mA = (x + 30°, m

Answer 1

In this case the answer is very simple .

Step 01:

Data

ΔABC ≅ ΔDEF

Step 02:

Since both triangles are congruent we can say that,

∠A ≅ ∠D

( x + 30) = 80

x = 80 - 30 = 50

∠A = 50 + 30 = 80

The answer is:

∠A = 80 °