equilateral triangle
All sides match
An equilateral triangle is a triangle with all three sides the same length, which also makes all three angles equal—each measuring sixty degrees.
The term distinguishes it from isosceles triangles (two equal sides) and scalene triangles (no equal sides).
The yield sign is an equilateral triangle.
- vertexPoint where edges converge
- centroidMean position of figure
- geometryScience of spatial relationships
- tessellationGapless plane coverage
- angleGeometric measure of rotation
acute angle · symmetry · delta · regular polygon · congruent · hexagon · trilateral · medians · base · orthocenter · polygon · geometric shape · shape · point · sides · acute · protractor · trigon
- regular polygonsregular hexagon, regular octagon
- geometryangles, circles, angle, shapes, lines
- Trianglesisosceles, scalene, hypotenuse, vertex, vertices
- polygonspolygon, quadrilateral, pentagon, hexagon, heptagon
- shapescircle, square, rectangle, oval, hexagon
- tiling shapeshexagon, square, rhombus, parallelogram, trapezoid
side length equality
equilateral trianglescalene triangle
Three-sided figure, all unequal
scalene · irregular polygon · obtuse triangle · isosceles triangle · right triangle