如图,在△ABC和△ADE中,∠BAD=∠CAE,∠ABC=∠ADE. (1)写出图中两对相似三角形(不得添加字母和线); (2)请分别说明两对三角形相似的理由.

问题描述:

如图,在△ABC和△ADE中,∠BAD=∠CAE,∠ABC=∠ADE.

(1)写出图中两对相似三角形(不得添加字母和线);
(2)请分别说明两对三角形相似的理由.

(1)△ABC∽△ADE,△ABD∽△ACE(2分)(2)①证△ABC∽△ADE,∵∠BAD=∠CAE,∠BAD+∠DAC=∠CAE+∠DAC,即∠BAC=∠DAE.(4分)又∵∠ABC=∠ADE,∴△ABC∽△ADE.(5分)②证△ABD∽△ACE,∵△ABC∽△ADE,∴A...