CustomPaint equivalent of the five point star svg at Wikipedia https://upload.wikimedia.org/wikipedia/commons/1/18/Five-pointed_star.svg

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: CustomPaint(
            painter: StarPainter(),
            size: const Size(255, 240),
          ),
        ),
      ),
    );
  }
}

class StarPainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {
    // d="m25,1 6,17h18l-14,11 5,17-15-10-15,10 5-17-14-11h18z"
    canvas.drawPath(
      Path()
        ..relativeMoveTo(25, 1)
        ..relativeLineTo(6, 17)
        ..relativeLineTo(18, 0)
        ..relativeLineTo(-14, 11)
        ..relativeLineTo(5, 17)
        ..relativeLineTo(-15, -10)
        ..relativeLineTo(-15, 10)
        ..relativeLineTo(5, -17)
        ..relativeLineTo(-14, -11)
        ..relativeLineTo(18, 0)
        ..close(),
      Paint()
        ..color = Colors.black
        ..style = PaintingStyle.stroke
        ..strokeWidth = 2,
    );
  }

  @override
  bool shouldRepaint(CustomPainter oldDelegate) => false;
}