How to Build a Pentagon in Minecraft (5-Sided Shape Guide, 2026)

By Minecraft Circle Generator Team · Published 2026-08-22

Short answer: a pentagon has 5 sides of equal length meeting at 108° interior angles, which don't align to the Minecraft grid cleanly. The trick: pick a "size" (side length in blocks), then use pre-calculated block coordinates for each of the 5 corners. Small pentagons (side 7-15) look sharp; large ones (side 25+) suffer visible stair-step edges. Below: a copy-paste block grid for common sizes, techniques for smoother edges, and 4 pentagon build ideas (base, castle, temple, redstone farm).

Why Pentagons Are Harder Than Circles or Squares

Pentagons have five 108° interior angles. A block grid supports 90° (squares) and 45° (diagonals) cleanly. Every other angle produces a stair-step approximation, and 108° is far from any grid-friendly angle. The result: even a "good" Minecraft pentagon has visible zig-zag on 4 of its 5 sides.

There's no way around this — it's a fundamental geometry vs voxel-grid issue. Best you can do is choose a good size, pick smoothing techniques, and accept some approximation.

Quick Sizing Table

Side Length	Approx Outer Radius	Best For	Edge Quality
5 blocks	~4	Decorative accent	Rough (visible corners only)
7 blocks	~6	Small altar, garden feature	Passable
11 blocks	~9	Small base, altar room	Good — recognizable
15 blocks	~13	Fortress base, temple	Good, some edge jaggedness
21 blocks	~18	Grand build, castle keep	Very good, minor stair-steps
31 blocks	~26	Megabuild, arena base	Excellent, edges smoothed by scale

Pentagon Coordinates (Ready to Copy)

For a pentagon with the top vertex pointing north, centred at origin, use these vertex coordinates (approximate — round to nearest block):

Side length 7 (small)

Top: (0, +5)
Upper right: (+5, +2)
Lower right: (+3, -4)
Lower left: (-3, -4)
Upper left: (-5, +2)

Side length 11

Top: (0, +9)
Upper right: (+9, +3)
Lower right: (+5, -7)
Lower left: (-5, -7)
Upper left: (-9, +3)

Side length 15

Top: (0, +12)
Upper right: (+12, +4)
Lower right: (+7, -10)
Lower left: (-7, -10)
Upper left: (-12, +4)

Side length 21

Top: (0, +17)
Upper right: (+17, +5)
Lower right: (+10, -14)
Lower left: (-10, -14)
Upper left: (-17, +5)

Step-by-Step: Building a Side-15 Pentagon

Choose your build spot. Place a marker block at your intended centre.
Walk 12 blocks north from centre. Place the top vertex block.
From the top vertex, walk to upper-right vertex position (relative +12 x, -8 z from top). Or from centre, walk +12 x, +4 z. Place block.
From upper-right, walk down to lower-right vertex position. Or from centre, walk +7 x, -10 z. Place block.
Repeat for lower-left (centre -7 x, -10 z) and upper-left (centre -12 x, +4 z).
Connect each pair of adjacent vertices with a straight-ish line of blocks. Use Bresenham's line algorithm intuition: for each block on the line, take the closest grid cell to the true line.
Fill or leave outline as needed.

Smoothing the Edges

Since pentagon edges hit 108° angles, the raw block-outline has visible stair-steps. Three ways to smooth:

1. Stair blocks on the diagonal transitions

At each spot where the outline steps up (say, 3 blocks forward + 1 block sideways), replace the corner cell with a stair block angled to fill the diagonal. Cuts the visible zig-zag.

2. Double the wall thickness

Build the pentagon outline, then build a second outline 1 block inside. The gap between them hides individual stair-step wobbles.

3. Curved edges (giving up "true" pentagon)

Instead of straight lines between vertices, curve each edge slightly outward using a very shallow circle segment. The result reads as a pentagon but with softer edges. Trade-off: less "geometric," more "organic."

4 Pentagon Build Ideas

1. Pentagonal Altar (Side 7)

Small decorative floor pattern.

Filled pentagon in polished andesite for the floor.
Outline in gold blocks.
Centre block: enchanting table or beacon.
Optional: 5 pillars at each vertex, holding lanterns.

2. Pentagon Fortress Base (Side 21)

A classic star-fort silhouette in miniature.

Pentagon outline walls, 4 blocks tall, stone brick.
Corner tower at each of the 5 vertices — cylindrical, diameter 7, height 8.
Filled floor inside the pentagon (planks or smooth stone).
Gate on one side (the "flat" southern edge is usually cleanest).

3. Pentagon Temple (Side 15)

Occult / mystical build.

Filled pentagon floor, obsidian or blackstone.
5 pillars at vertices, black concrete, 8 blocks tall.
Roof: 5 spruce log beams connecting each pillar top to the centre.
Centre: a raised platform (2 blocks high) with a beacon shining upward through a 3-block hole in the roof.
Optional: red carpet in the shape of a pentagram inside the pentagon (star made of 5 diagonal lines connecting non-adjacent vertices).

4. Pentagon Redstone Farm Base (Side 11)

Efficient centralized design for 5 farms sharing one collector.

Filled pentagon floor with hopper network.
5 farms extending outward from each of the 5 vertices.
Central hopper collector feeds into a chest room below.
Compact form factor — all farms are equidistant from the storage.

Common Mistakes

Trying to "eyeball" without vertex coordinates

You'll end up with an irregular blob, not a pentagon. Use the vertex tables above.

Symmetry drift

If your two "lower" vertices aren't at the exact same Z coordinate, the pentagon looks tilted. Double-check symmetry before filling.

Wrong scale

Side length under 7 looks like a lumpy circle. Under 11 you can't fit anything useful inside. Aim for 11+ if you want it to be recognizably pentagonal.

Ignoring the flat side

The "bottom" edge of a pentagon (opposite the top vertex) is the only edge that's roughly horizontal. Use it for the entrance / main gate — the diagonal sides make bad door placements.

Common Questions

Is there a Minecraft pentagon generator like the circle generator?

Not currently on our site — we generate circles, spheres, ovals, and domes. Pentagons don't fit the same rounded-shape category cleanly. If enough people ask, we might add one. For now: use the vertex tables + line-drawing above.

Can I use WorldEdit to generate a pentagon?

Not directly — WorldEdit's built-in shapes are circles, cylinders, spheres, cones, pyramids. But you can approximate: draw 5 walls using //line stone x1,y1,z1 x2,y2,z2 between the vertex coordinates. See our WorldEdit vs Litematica guide.

How do I make a 5-pointed star (pentagram)?

Connect every other vertex of the pentagon. Vertex 1 → vertex 3 → vertex 5 → vertex 2 → vertex 4 → back to vertex 1. Draws a 5-pointed star inscribed in the pentagon.

What about hexagons?

Hexagons are much easier — they align with the 60° angles you can approximate with stairs. Sides come out cleaner. We'll cover hexagons in a follow-up guide.