Answer:
Explanation:
They are all Parallelogram. Properties of parallelogram: the opposite angles are equal. The consecutive or adjacent angles are supplementary (mean add together equal 180°).
7. ∠E+110°=180° ∠E=70°
8. （3x+21)°=（2x+43)°
3x+21=2x+43
x=22
given ∠G=(2X+43)°, we got x=22 above
∠G=(2*22+43)°=87°
9. (2x+25)°+104°=180°
(2x+25)°=180° - 104 °
(2x+25)°=76°
2x+25=76
x=25.5
10. (2x+20)°+(3x-85)°=180°
2x+20+3x-85=180
5x=245
x=49
given ∠A=(3X-85)°, we got x=49 above
∠A=62°