Triangle ABC and triangle BDE are equilateral triangles. This paper proves that: (1) triangle ABC is equal to triangle CBD (2) AE = De Please, hurry up

Equilateral triangle three sides are equal, the angle is 60 degrees, see if the condition has given equal sides, can directly get congruent!

RELATED INFORMATIONS

1. As shown in the figure, in △ ABC, CF ⊥ AB is in F, be ⊥ AC is in E, M is the midpoint of BC, EF = 5, BC = 8, then the perimeter of △ EFM is______ ．
2. As shown in the figure, in △ ABC, CF ⊥ AB is in F, be ⊥ AC is in E, M is the midpoint of BC, EF = 5, BC = 8, then the perimeter of △ EFM is______ ．
3. In triangle ABC, CF is perpendicular to AB and be is perpendicular to AC and E. m is the midpoint of BC, BF = 5 and BC = 8. Can you determine the perimeter of triangle EFM?
4. As shown in the figure, in △ ABC, ab = AC, D, e and F are on three sides respectively, and be = CD, BD = CF, G is the midpoint of EF
5. As shown in the figure, in △ ABC, ad bisects ∠ BAC, de ‖ AC, EF ‖ BC, ab = 15, AF = 4, then de=______ ．
6. Finding AF / ad = ad / AB in triangle ABC by de / / BC EF / / CD
7. As shown in the figure, in triangle ABC, De is parallel to BC, EF is parallel to CD
8. On the isosceles △ ABC, ab = AC, passing a point E on BC, do a straight line DF, intersect AB with D, intersect AC with F, and prove de / EF = dB / CF
9. The relationship between EF and be can be obtained by taking m as a 30 ° angle, intersection AB with E, intersection CA extension line with F
10. In the triangle ABC, BD is perpendicular to AC at point D, CE is perpendicular to ab at point E, BD and CE intersect at point h, ad = DH = 1, CD = 5, find the area of triangle ABC. If you can't send the graph, please draw it by yourself. The top vertex is a, and the bottom is left B and right C
11. Triangle ABC is an equilateral triangle, D is the midpoint of side AB, de and BC are perpendicular, and the area of triangle BDE is 5 square centimeters. Find the area of triangle ABC
12. As shown in the figure, △ ABC, ab = AC, ∠ BAC = 110 °, ad is the middle line on the side of BC, and BD = be, then ∠ AED degree is______ ．
13. As shown in the figure, given that point E is on the edge ab of △ ABC, point D is on the extension line of Ca, and point F is on the extension line of BC, what is the size relationship between ∠ ACF and ∠ D? Please give reasons
14. As shown in the figure, given that point F is a point on the extension line of the edge BC of △ ABC, DF ⊥ AB is at D, intersection AC is at e, and ∠ a = 56 °, f = 31 °, calculate the degree of ∠ ACB
15. As shown in the figure, in △ ABC, ab = AC, ∠ BAC = 36 °, CD bisection ∠ ACB intersects AB at point D, AE parallels DC intersects BC extension line at point E, if DB = 2, CD = 3, AE = how much?
16. It is known that in △ ABC, D is any point on the edge of ab Please write down the steps clearly
17. It is known that △ ABC, ad bisects ∠ BAC and intersects BC with D, DB = DC. Prove that △ ABC is an isosceles triangle. Prove that: ∵ DB = DC ∵ ad is the middle line of △ ABC ∵ ad bisects ∠ BAC and intersects BC with D ∵ ad is also the angle bisector of ∠ BAC in △ ABC. Is ∵ ABC an isosceles triangle?
18. As shown in the figure, in △ ABC, ∠ C = 90 °, ad is the bisector of ∠ BAC, de ⊥ AB is on e, f is on AC, DB = DF As shown in the figure, in △ ABC, ∠ C = 90 °, ad is the bisector of ∠ BAC, de ⊥ AB is on e, f is on AC, DB = DF
19. As shown in the figure, AC ⊥ CB, BD ⊥ CB, ab = DC, verify ∠ abd = ∠ ACD
20. As shown in the figure, given AB = AC, DB = DC, try to explain ∠ abd = ∠ ACD