Poster landscape triangle grid paper

Poster Landscape 10mm Flat-Base Triangle Grid Paper PDF

This Poster landscape template uses equilateral triangles with 10mm sides and a flat-base starting phase created by shifting the first diagonal row on a 18 x 24 inch page. It is ready to download, print, or customize.

Paper
POSTER / Landscape
Format
PDF / PNG
Triangle side
10mm
Layout
Flat base
Poster Landscape 10mm Flat Base Triangle Grid Paper PDF preview

Choose a different paper size

Choose triangle size

Choose the starting phase

Template details

About this landscape Poster 10mm flat-base triangle grid

Poster paper creates a large continuous grid for work that needs to be viewed, marked, or discussed from a distance. Each equilateral triangle has 10mm sides and a perpendicular height of approximately 8.7 mm.

The flat-base option shifts the first diagonal row by half a triangle side, changing the phase visible at the upper grid edge. The centered grid area is approximately 580 x 433.0 mm, with 58 x 50 side-width and row-height intervals forming about 5,800 complete or edge-clipped triangular cells.

Paper size
18 x 24 in (457.2 x 609.6 mm)
Triangle side
10mm
Grid area
580 x 433.0 mm
Triangle cells
about 5,800

Why use Poster 10mm triangle paper?

A 10mm triangle grid provides larger cells for bold constructions, labels, classroom demonstrations, quilting layouts, and designs that need more drawing room.

Geometry and tessellations

Use the three 60-degree line directions for equilateral triangles, rhombi, hexagons, symmetry exercises, transformations, and repeating geometric patterns.

Patterns, crafts, and maps

The 10mm triangles support quilting plans, bead and mosaic patterns, triangular maps, pixel-style designs, and technical sketches built from equal-sided units.

Flat Base layout on Poster

The flat-base option shifts the first diagonal row by half a triangle side, changing the phase visible at the upper grid edge. The geometry stays the same, so choose the phase that makes the top of your drawing or pattern easiest to begin.

Poster vs Tabloid (11 x 17) 10mm triangle paper

Both formats preserve the same 10mm side length and flat-base starting phase. Choose Poster for wall charts, maps, displays, and large plans; choose Tabloid (11 x 17) when large handouts, plans, and presentation sheets better matches the printer or project.

Open Tabloid (11 x 17) 10mm flat-base triangle paper →
Comparison Poster Tabloid (11 x 17)
Page size 18 x 24 in (457.2 x 609.6 mm) 11 x 17 in (279.4 x 431.8 mm)
Grid area 580 x 433.0 mm 410 x 251.1 mm
Grid intervals 58 x 50 41 x 29
Triangle cells about 5,800 about 2,378

More Poster Triangle Grid Paper Templates

12 ready-made templates are available for this paper size.

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Poster 10mm Triangle Grid Paper PDF preview

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Poster Landscape 10mm Triangle Grid Paper PDF preview

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Poster 10mm Flat Base Triangle Grid Paper PDF preview

Poster 10mm Flat Base Triangle Grid Paper PDF

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Poster Landscape 10mm Flat Base Triangle Grid Paper PDF preview

Poster Landscape 10mm Flat Base Triangle Grid Paper PDF

Poster landscape | 10mm triangles | Flat base

FAQ

Answers specific to printing 10mm flat-base triangle grid paper on Poster.

What does 10mm triangle size mean?

The listed size is the length of every side of each equilateral triangle. Its perpendicular height is approximately 8.7 mm.

How many triangles fit on Poster paper?

This landscape template forms about 5,800 complete or edge-clipped triangular cells inside a centered 580 x 433.0 mm grid area.

What is the difference between point up and flat base?

Both options have identical triangle dimensions and line directions. Flat base shifts the first diagonal row by half a side, changing which phase begins at the upper edge of the grid.

Which print setting keeps the triangles true to size?

Select Poster paper, use Actual Size or 100% scale, and disable Fit to Page. Then verify that one horizontal side measures 10mm.

Should I use portrait or landscape Poster triangle paper?

Portrait works well for worksheets, vertical patterns, and notebook-style diagrams. Landscape provides more horizontal room for wide constructions, maps, quilts, and classroom demonstrations.