["A", "B", "C", "D", "E", "F"]
randRange(0,5)
(START + randRange(1,2)) % 6
VERTICES[START]
VERTICES[END]
[VERTICES[(START + 5) % 6], VERTICES[(START + 4) % 6]]
[VERTICES[(END + 1) % 6], VERTICES[(END + 2) % 6]]
VERTICES[(START + 3) % 6]
VERTICES[(END + 3) % 6]
[PI / 6, PI / 4, 3 * PI / 4]
[15, 15, 15]
[13, 13, 13]
[ [(LENGTH[0]/2) * cos(TILT[0]), (LENGTH[0]/2) * sin(TILT[0])],
[(LENGTH[1]/2) * cos(TILT[1]), (LENGTH[1]/2) * sin(TILT[1])],
[(LENGTH[2]/2) * cos(TILT[2]), (LENGTH[2]/2) * sin(TILT[2])], ]
[ [-1 * (LENGTH[0]/2) * cos(TILT[0]), -1 * (LENGTH[0]/2) * sin(TILT[0])],
[-1 * (LENGTH[1]/2) * cos(TILT[1]), (-1 * LENGTH[1]/2) * sin(TILT[1])],
[-1 * (LENGTH[2]/2) * cos(TILT[2]), (-1 * LENGTH[2]/2) * sin(TILT[2])], ]
[ [(INNER_LENGTH[0]/2) * cos(TILT[0]), (INNER_LENGTH[0]/2) * sin(TILT[0])], [(INNER_LENGTH[1]/2) * cos(TILT[1]), (INNER_LENGTH[1]/2) * sin(TILT[1])],
[(INNER_LENGTH[2]/2) * cos(TILT[2]), (INNER_LENGTH[2]/2) * sin(TILT[2])], ]
[ [-1 * (INNER_LENGTH[0]/2) * cos(TILT[0]), -1 * (INNER_LENGTH[0]/2) * sin(TILT[0])], [-1 * (INNER_LENGTH[1]/2) * cos(TILT[1]), (-1 * INNER_LENGTH[1]/2) * sin(TILT[1])], [-1 * (INNER_LENGTH[2]/2) * cos(TILT[2]), (-1 * INNER_LENGTH[2]/2) * sin(TILT[2])], ]
{ r: 0.2, fill: BLUE, stroke: "none" }
init({
range: [[-10, 10], [-10, 10]],
scale: 20
});
line( ENDPOINT1[0], ENDPOINT2[0], { arrows: "->" } );
line( ENDPOINT2[0], ENDPOINT1[0], { arrows: "->"} );
circle( INNER_ENDPOINT1[0], DOT_ATTRS );
circle( INNER_ENDPOINT2[0], DOT_ATTRS );
label( INNER_ENDPOINT1[0], "A", "above");
label( INNER_ENDPOINT2[0], "D", "above");
line( ENDPOINT1[1], ENDPOINT2[1], { arrows: "->" } );
line( ENDPOINT2[1], ENDPOINT1[1], { arrows: "->"} );
circle( INNER_ENDPOINT1[1], DOT_ATTRS );
circle( INNER_ENDPOINT2[1], DOT_ATTRS );
label( INNER_ENDPOINT1[1], "B", "above");
label( INNER_ENDPOINT2[1], "E", "above");
line( ENDPOINT1[2], ENDPOINT2[2], { arrows: "->" } );
line( ENDPOINT2[2], ENDPOINT1[2], { arrows: "->"} );
circle( INNER_ENDPOINT1[2], DOT_ATTRS );
circle( INNER_ENDPOINT2[2], DOT_ATTRS );
label( INNER_ENDPOINT1[2], "C", "above");
label( INNER_ENDPOINT2[2], "F", "above");
circle( [0,0], DOT_ATTRS);
label( [0,0], "G", "above");
Name an angle vertical to \angle
ANGLE_START G ANGLE_END .
OPP_STARTGOPP_END
OPP_ENDGOPP_START
Vertical angles form two intersecting straight lines.
Name an angle that will combine with the given angle to form a big X of two straight lines.
\angle OPP_STARTGOPP_END is vertical to
\angle ANGLE_STARTGANGLE_END .
Name an angle adjacent to \angle
ANGLE_START G ANGLE_END
ANGLE_START
GADJ_START[0]
ANGLE_START
GADJ_START[1]
ANGLE_END
GADJ_END[0]
ANGLE_END
GADJ_END[1]
ADJ_START[0]
GANGLE_START
ADJ_START[1]
GANGLE_START
ADJ_END[0]
GANGLE_END
ADJ_END[1]
GANGLE_END
Adjacent angles share a ray and have a common vertex, but do not overlap.
Name an angle that is next to \angle ANGLE_START G ANGLE_END .
\angle ANGLE_STARTGADJ_START[0] and
\angle ANGLE_ENDGADJ_END[1] are two adjacent angles. There are two others, as well.
Name an angle that forms a linear pair with \angle
ANGLE_START G ANGLE_END
ANGLE_START
GOPP_END
ANGLE_END
GOPP_START
OPP_END
GANGLE_START
OPP_START
GANGLE_END
A linear pair is two adjacent angles that form a straight angle.
Name an angle that shares a ray with \angle ANGLE_START G ANGLE_END and will add to 180{}^{\circ}
Two such angles are \angle ANGLE_STARTGOPP_END and
\angle ANGLE_ENDGOPP_START .