diff --git a/packages/flutter/lib/src/widgets/implicit_animations.dart b/packages/flutter/lib/src/widgets/implicit_animations.dart
index 35be6ad..b8a01fb 100644
--- a/packages/flutter/lib/src/widgets/implicit_animations.dart
+++ b/packages/flutter/lib/src/widgets/implicit_animations.dart
@@ -882,14 +882,10 @@
     Key key,
     @required this.alignment,
     this.child,
-    this.heightFactor = 1.0,
-    this.widthFactor = 1.0,
     Curve curve = Curves.linear,
     @required Duration duration,
     VoidCallback onEnd,
   }) : assert(alignment != null),
-       assert(widthFactor == null || widthFactor >= 0.0),
-       assert(heightFactor == null || heightFactor >= 0.0),
        super(key: key, curve: curve, duration: duration, onEnd: onEnd);
 
   /// How to align the child.
@@ -915,16 +911,6 @@
   /// {@macro flutter.widgets.child}
   final Widget child;
 
-  /// If non-null, sets its height to the child's height multiplied by this factor.
-  ///
-  /// Can be both greater and less than 1.0 but must be positive. Defaults to 1.0.
-  final double heightFactor;
-
-  /// If non-null, sets its width to the child's width multiplied by this factor.
-  ///
-  /// Can be both greater and less than 1.0 but must be positive. Defaults to 1.0.
-  final double widthFactor;
-
   @override
   _AnimatedAlignState createState() => _AnimatedAlignState();
 
@@ -937,23 +923,16 @@
 
 class _AnimatedAlignState extends AnimatedWidgetBaseState<AnimatedAlign> {
   AlignmentGeometryTween _alignment;
-  Tween<double> _heightFactorTween;
-  Tween<double> _widthFactorTween;
 
   @override
   void forEachTween(TweenVisitor<dynamic> visitor) {
     _alignment = visitor(_alignment, widget.alignment, (dynamic value) => AlignmentGeometryTween(begin: value as AlignmentGeometry)) as AlignmentGeometryTween;
-    _heightFactorTween = visitor(_heightFactorTween, widget.heightFactor, (dynamic value) => Tween<double>(begin: value as double)) as Tween<double>;
-    _widthFactorTween = visitor(_widthFactorTween, widget.widthFactor, (dynamic value) => Tween<double>(begin: value as double)) as Tween<double>;
-
   }
 
   @override
   Widget build(BuildContext context) {
     return Align(
       alignment: _alignment.evaluate(animation),
-      heightFactor: _heightFactorTween.evaluate(animation),
-      widthFactor: _widthFactorTween.evaluate(animation),
       child: widget.child,
     );
   }
@@ -962,8 +941,6 @@
   void debugFillProperties(DiagnosticPropertiesBuilder description) {
     super.debugFillProperties(description);
     description.add(DiagnosticsProperty<AlignmentGeometryTween>('alignment', _alignment, defaultValue: null));
-    description.add(DiagnosticsProperty<Tween<double>>('widthFactor', _widthFactorTween, defaultValue: null));
-    description.add(DiagnosticsProperty<Tween<double>>('heightFactor', _heightFactorTween, defaultValue: null));
   }
 }
 
diff --git a/packages/flutter/test/widgets/align_test.dart b/packages/flutter/test/widgets/align_test.dart
index 6e37d2f..b6d4e5c 100644
--- a/packages/flutter/test/widgets/align_test.dart
+++ b/packages/flutter/test/widgets/align_test.dart
@@ -112,70 +112,4 @@
     expect(size.width, equals(800.0));
     expect(size.height, equals(10.0));
   });
-
-  testWidgets('Align widthFactor', (WidgetTester tester) async {
-    final GlobalKey inner = GlobalKey();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: Row(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Align(
-              widthFactor: 0.5,
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-            Align(
-              key: inner,
-              widthFactor: 0.5,
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-    final RenderBox box = inner.currentContext.findRenderObject() as RenderBox;
-    expect(box.size.width, equals(50.0));
-  });
-
-  testWidgets('Align heightFactor', (WidgetTester tester) async {
-    final GlobalKey inner = GlobalKey();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: <Widget>[
-            Align(
-              alignment: Alignment.center,
-              heightFactor: 0.5,
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-            Align(
-              key: inner,
-              alignment: Alignment.center,
-              heightFactor: 0.5,
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-    final RenderBox box = inner.currentContext.findRenderObject() as RenderBox;
-    expect(box.size.height, equals(50.0));
-  });
 }
diff --git a/packages/flutter/test/widgets/animated_align_test.dart b/packages/flutter/test/widgets/animated_align_test.dart
index f40f3f9..9f99d80 100644
--- a/packages/flutter/test/widgets/animated_align_test.dart
+++ b/packages/flutter/test/widgets/animated_align_test.dart
@@ -59,78 +59,4 @@
     expect(tester.getSize(find.byKey(target)), const Size(100.0, 200.0));
     expect(tester.getTopRight(find.byKey(target)), const Offset(800.0, 400.0));
   });
-
-  testWidgets('AnimatedAlign widthFactor', (WidgetTester tester) async {
-    final GlobalKey inner = GlobalKey();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: Row(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            AnimatedAlign(
-              alignment: Alignment.center,
-              curve: Curves.ease,
-              widthFactor: 0.5,
-              duration: const Duration(milliseconds: 200),
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-            AnimatedAlign(
-              key: inner,
-              alignment: Alignment.center,
-              curve: Curves.ease,
-              widthFactor: 0.5,
-              duration: const Duration(milliseconds: 200),
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-    final RenderBox box = inner.currentContext.findRenderObject() as RenderBox;
-    expect(box.size, equals(const Size(50.0, 100)));
-  });
-
-  testWidgets('AnimatedAlign heightFactor', (WidgetTester tester) async {
-    final GlobalKey inner = GlobalKey();
-    await tester.pumpWidget(
-      Directionality(
-        textDirection: TextDirection.ltr,
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            AnimatedAlign(
-              alignment: Alignment.center,
-              curve: Curves.ease,
-              heightFactor: 0.5,
-              duration: const Duration(milliseconds: 200),
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-            AnimatedAlign(
-              key: inner,
-              alignment: Alignment.center,
-              curve: Curves.ease,
-              heightFactor: 0.5,
-              duration: const Duration(milliseconds: 200),
-              child: Container(
-                height: 100.0,
-                width: 100.0,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-    final RenderBox box = inner.currentContext.findRenderObject() as RenderBox;
-    expect(box.size, equals(const Size(100.0, 50)));
-  });
 }