please show work thank you
∠D = 90°∠E = x∠F = 2x - 12Angles in a triangle = 180° 90 + x + 2x - 12 = 180 78 + 3x = 180 -78 -78 3x = 102 \(\frac{3x}{3} = \frac{102}{3}\) 3 and 3 cancels out 34 = x∠E = 34°∠F = 2x -12 = 2 × 34 - 12 = 56°
