A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length. The dashes on the lines show they are equal in length. The angles at ...

The angle on a straight line is 180°. The angle VOY = 180°. The angle at the centre is double the angle at the circumference. Angle VWY = \(\frac{1}{2}\) of angle VOY = \(\frac{1}{2} ...