To find the missing angles in an equilateral triangle, divide the sum of interior angles in a triangle by 3 In an isosceles triangle, two of the sides are equal.

The trio will appear to form a broad isosceles triangle with Venus marking the vertex angle, while Aldebaran and the moon form the base of the triangle.

Continuing westward, Mars formed a different type of isosceles triangle with Pollux and Castor on Feb. 2, with Pollux marking the vertex and Mars and Castor forming the base.

Summary We prove the next generalization of the Steiner-Lehmus theorem: if two equal cevians intersect with each other on the angle bisector of the third triangle vertex, then the triangle is ...

But, despite the Dutchman’s quick-thinking isosceles triangle of doubt, the odds were still firmly in Tottenham’s favour.