<｜begin▁of▁sentence｜>### Instruction:
Given a Cairo context from an igraph Plot instance, how do you draw a triangle polygon using the CairoPolygonDrawer's draw method?
### Response:
from igraph import Graph
from igraph.drawing import Plot
from igraph.drawing.shapes import CairoPolygonDrawer

# Create a simple graph
g = Graph.Tree(3, 2)
# Create a Plot instance
gplot = Plot()
# Access the Cairo context
context = gplot.context
# Create an instance of a polygon drawer
drawer = CairoPolygonDrawer(context)
# Draw a triangle
points = [(0, 0), (50, 0), (25, 43)]  # Points should be given in either clockwise or counter-clockwise order
drawer.draw(points)
# Commit the changes to the plot
context.stroke()
# Save the plot to a file
gplot.save('polygon.png')
<|EOT|>
