triangle triangles line equilateral construct draw altitude constructing right compass creating drawn special dice vertex triad wood core congruent geometry
triangle equilateral compass draw using circle straightedge views join
circle triangle equilateral compass chain draw using necklace clipart charlotte join yellow straightedge frame chesnais math radius vertices ace instead
compass draw circle using triangle equilateral straightedge points
isosceles equilateral triangles triangle base geometry angles inches protractor angle measure vertex compass reason ck license nc cc ck12
