225 + 135 = 360 The sum of interior angles in a triangle is 180˚. In an equilateral triangle, all three angles are equal to 60˚. To find the missing angles in an equilateral triangle ...

Now, more than 122 years after it was first proposed, Kamata and two other mathematicians have finally proved that a solution ...

Students may notice symmetry in the isosceles and equilateral triangles and non-symmetry in the scalene triangles Informal recognition of these properties may be helpful in recognizing formal ...

To solve the puzzle, the trio grouped possible dissections of an equilateral triangle based on how the ... shape and comparing the edge lengths and angles. If a path in the square had aligned ...