A rectangle geometric shape

						var board = JXG.JSXGraph.initBoard('box1', {
boundingbox: [-10, 10, 10, -10],showNavigation:false, showcopyright: false, axis: false,
});
var p1 = board.create('point', [7, -1],{name:'',face:''});
var p2 = board.create('point', [7, 5],{name:'',face:''});
var p3 = board.create('point', [-4, 5],{name:'',face:''});
var pp1 = board.create('parallelpoint', [p2, p1, p3],{name:'',face:''});
var l1 = board.create('segment', [p1, p2]);
var l2 = board.create('segment', [p2,p3],);
var l3 = board.create('segment', [p3, pp1],);
var l4 = board.create('segment', [pp1, p1],);

var a1 = board.create('angle', [p3, p2, p1],{name:' ',radius:1,label:{offset:[-15,-8]}});

The image appears in the following posts

A quadrilateral is a polygon with four sides and four vertices. If there are two sides intersecting each other, the quadrilateral is a complex polygon. However, most of types of quadrilateral have non-intersecting sides.
A parallelogram is a quadrilateral whose opposite sides are parallel and equal. The opposite angles of a parallelogram are also equal.
A rectangle is a quadrilateral with four right angles. Its' a special case of parallelograms whose opposite sides are parallel and equal.
A square is a special case of rectangle that has four equal sides.
A rhombus is a special case of a parallelogram that has four equal sides. The difference between a square and rhombus is that all angles of a square are right angles, but the angles of a rhombus must not be right angles.

Triangle posted 1 year ago