Answer:
2. SAS
4. x = 3
1. SAS
Explanation:
2. Two triangles that are said to be congruent would have corresponding sides and angles. In this case, it has shown that the two sides next to the marked angle are congruent(or the same) along with angle A, equaling angle D. This indicates that the two triangles are congruent.
4. Since all triangle interior angles add up to 180, we can use that information to solve this problem. Angle GEF and angle DEF are supplementary angles; taking this into mind, you can use the equation:
2x+1+25 = 10x+2
1+25-2 = 10x-2x
26-2 = 8x
24 = 8x
3 = x
1. The triangle has been marked, stating that the angles are the same, and if you look closely at the sides, you can see the smaller triangle is dilated by 2 to make the bigger triangle.