Geometry
Complete the reasons and use them to fill in the answers
Question | Answer | Reason |
A=150-30=180 | Angles on a straight line… | |
B=54+54=108 | Vertically opposite angles… | |
C+90+20+100=360 c+210=360 C=360-210= =150 | Angles around a point… | |
d+38+114=180 d+152=180 D=180-152 28 | Angles in a triangle… | |
E=40+70+70=180 | Angles in a triangle… | |
F=120+60=180 60+60+60=180 | Equilateral triangles… Angles in a triangle… Angles on a straight line… | |
g+54+68=180 G=58 | Angles on a straight line… Angles in a triangle… | |
H=111+69=180 69+69=138+42=180 | Isosceles triangles… Angles in a triangle… Angles on a straight line… |
