Construction in GCLC language

dim 120 120

point M_{b} 95 67.5
point G 70 58.33
point H_{a} 80 40

color 220 0 0
fontsize 11

cmark_rt M_{b}
cmark_t G
cmark_b H_{a}
color 0 0 0
fontsize 10


% Constructing a point B such that M_{b}B/M_{b}G=3
towards B M_{b} G 3 
cmark_b B
color 200 200 200
drawsegment M_{b} B 
color 0 0 0


% DET:  points H_{a} and B are not the same
% Constructing a line a which passes through point H_{a} and point B
line a H_{a} B 

color 200 200 200
drawline a
color 0 0 0



% NDG:  points H_{a} and M_{b} are not the same
% Constructing a circle k(M_{b},C) whose center is at point M_{b} and which passes through point H_{a}
circle k(M_{b},C) M_{b} H_{a} 

color 200 200 200
drawcircle k(M_{b},C)
color 0 0 0



% NDG:  line a and circle k(M_{b},C) intersect% DET:  points H_{a} and C must be different
% Constructing a point P_{\_G46416} which is a foot of the point M_{b} on the line a
foot P_{\_G46416} M_{b} a 
cmark_r P_{\_G46416}
color 200 200 200
drawline M_{b} P_{\_G46416} 
color 0 0 0

% Constructing a point C which is an image of the point H_{a} in the symmetry to point/line P_{\_G46416}
sim C P_{\_G46416} H_{a} 
cmark_b C



% Constructing a point A such that CA/CM_{b}=2
towards A C M_{b} 2 
cmark_t A
color 200 200 200
drawsegment C A 
color 0 0 0



drawsegment A B
drawsegment A C
drawsegment B C

% Non-degenerate conditions:  line a and circle k(M_{b},C) intersect; points H_{a} and M_{b} are not the same
% Determination conditions:  points H_{a} and C must be different; points H_{a} and B are not the same