angle A , B , C and angle D E Fand AB is parallel to DE and BC is parallel to EF , then prove that angle B = angle E and angle B + angle E is equals to 180 degree
Answers
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[tx]<!DOCTYPE html>
<html>
<head>
<title>CSS Heart Animation</title>
<style>.back{
position:fixed;
margin:auto;
width:100%;
heart:100%;
top:0;
bottom:0;
left:0;
right:0;
padding:0;
background-color:white;
animation-name:back;
animation-duration:3s;
animation-iteration-count:infinite;
}
.heart{
background-color:pink;
margin:50% auto;
top:0;
bottom:0;
right:0;
left:0;
padding:0;
height:50px;
width:50px;
transform:rotate(-45deg);
animation-name:heart;
animation-duration:3s;
animation-timing-function:ease-out;
animation-iteration-count:infinite;
}
.heart:before,.heart:after{
background-color:pink;
position:absolute;
content:"";
width:50px;
height:50px;
border-radius:50%;
}
.heart:before{
left:25px;
}
.heart:after{
left:0;
top:-25px;
}
@keyframes heart{
0%{
transform:scale(1)rotate(-45deg);
}
50%{
transform:scale(0.6)rotate(-45deg);
}
}
@keyframes back{
0%{
background-color:white;
opacity:1;
}
50%{
background-color:#ff0099;
}
}</style>
</head>
<body>
<div class="back"></div>
<div class="heart"></div>
</body>
</html>[/tex]