Question

美国九年级数学作业🌚🌚上星期生病了漏掉了mathemetics c

美国九年级数学作业🌚🌚上星期生病了漏掉了mathemetics course求解我懒得算了😂是不是很简单的😂😂希望能帮我一把我懒得做了

Answer 1

a . ∠C=180°-(∠A+∠B)
b . ∠F=180°-(∠D+∠E)
c . Yes, ∠C=∠F.
∵ ∠A=∠D, ∠B=∠E ∴ ∠A+∠B=∠D+∠E ∴∠C=180°-(∠A+∠B)=180°-(∠D+∠E)=∠F
d . Yes, △ABC ≌ △DEF.
∵ ∠A=∠D, ∠B=∠E, AC=DF ∴ △ABC ≌ △DEF（AAS）
e . Yes, the triangles msut be congruent. Because the are due to the RULE ASA.
f . corresponding, means as counterpart equivalent 【对应相等】

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