解:(1)100°,90°.
∵入射角与反射角相等,即∠1=∠4,∠5=∠6,
根据邻补角的定义可得∠7=180°-∠1-∠4=80°,
根据m∥n,所以∠2=180°-∠7=100°,
所以∠5=∠6=(180°-100°)÷2=40°,
根据三角形内角和为180°,所以∠3=180°-∠4-∠5=90°;
(2)90°,90°.
由(1)可得∠3的度数都是90°;
(3)90°
理由:因为∠3=90°,
所以∠4+∠5=90°,
又由题意知∠1=∠4,∠5=∠6,
所以∠2+∠7=180°-(∠5+∠6)+180°-(∠1+∠4),
=360°-2∠4-2∠5,
=360°-2(∠4+∠5),
=180°.
由同旁内角互补,两直线平行,可知:m∥n.
向左转|向右转
Owl City & Carly Rae Jepsen - Good Time
Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
It's always a good time
Woke up on the right side of the bed
What's up with this Prince song inside my head
Hands up if you're down to get down tonight
Cuz it's always a good time
Slept in all my clothes like I didn't care
Hopped into a cab, take me anywhere
I'm in if you're down to get down tonight
Cuz it's always a good time
Good morning and good night
I wake up at twilight
It's gonna be alright
We don't even have to try
It's always a good time
Woah-oh-oh-oh Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
We don't even have to try, it's always a good time
Feet down dropped my phone in the pool again
Checked out of my room hit the ATM
Let's hang out if you're down to get down tonight
Cuz it's always a good time
Good morning and good night
I wake up at twilight
It's gonna be alright we don't even have to try
It's always a good time
Woah-oh-oh-oh Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
We don't even have to try, it's always a good time
Woah-oh-oh-oh Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
We don't even have to try, it's always a good time
Doesn't matter when
It's always a good time then
Doesn't matter where
It's always a good time there
Doesn't matter when,
It's always a good time then
It's always a good time
Woah-oh-oh-oh Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
We don't even have to try, it's always a good time
Woah-oh-oh-oh Woah-oh-oh-oh
It's always a good time
Woah-oh-oh-oh
We don't even have to try, it's always a good time
提起曹艳,可能很多人都会感觉陌生。但是一提到电视剧《欢天喜地七仙女》,记忆中温婉尔雅的六公主肯定会让你眼前一亮。近日,记者连线正在赶拍新剧——《航班几点起飞》的曹艳,剧中担任女一号的她不但从古代走到了现代,而且将为观众呈现一个本色演出的富家千金。
欢迎分享,转载请注明来源:品搜搜测评网