• Number One

m∠B = 180° – 93°

m∠B = 87°

• Number Two

m∠D = 180° – 123°

m∠D = 57°

• Number Three

m∠E = 180° – 116°

m∠E = 64°

• Number Four

m∠C = 180° – 123°

m∠C = 57°

• Number Five

m∠A = 180° – 93°

m∠A = 87°

• Number Six

m∠F = 180° – 116°

m∠F = 64°

<(HNN12)>