8.1 Garis dan Sudut

Tembereng garis kongruen bermaksud

• Tembereng garis yang selari

• Tembereng garis yang bersilang

• Tembereng garis yang sama panjang

• Tembereng garis yang berserenjang

What is the size range for an acute angle?

• Between 0° and 90°

• Exactly 90°

• Between 90° and 180°

• Exactly 180°

Hitung sudut konjugat bagi 40^o

(a)  

What is the sum of angles on a straight line?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees