They could scarcely believe it possible; at two yards and a half below water-mark was a regular rent, in the form of an

isosceles triangle. The broken place in the iron plates was so perfectly defined that it could not have been more neatly done by a punch.

I had noticed that whenever I built a fire, Ajor outlined in the air before her with a forefinger an

isosceles triangle, and that she did the same in the morning when she first viewed the sun.

It marks the pointy end of an

isosceles triangle formed with a 10th- and 11th-magnitude star 6 1/2' to the north.

This can be mathematized, because the two tracks that seem to meet at the horizon form an

isosceles triangle if I'm standing right at the center of the tracks.

Now, we know that [angle]ACB is a + b by the property of an

isosceles triangle and the sum of two adjacent angles.

Examples of an equilateral, right-angled, scalene and

isosceles triangle.

Aged 11, I had an eccentric maths teacher, Mr Fred Bamford, nicknamed "Basher." He had a variety of canes and bendy pieces of wood, used to dish out punishment if we failed to grasp what an

isosceles triangle was.

Hence, the angle [angle]O'CB = 30[degrees] is a vertex angle in the

isosceles triangle [DELTA]O'CE (see Figure 5).

While I had made most of the tile shapes in random amounts, sizes and colors, the quantity and color of one tile shape was made with intention: the

isosceles triangle. After reviewing the photos of the basilica and Church floors in the book, I noted one constant: no matter what the color range, size or shape of the floor tiles, alternating black and white tiles, in any shape, gave the images of the floors a comforting, but not overdetermined, predictability, a suggestion of, not dependence on, structure.

"Whilst still observing the craft it appeared to tilt forward on its axis and at this stage he could clearly see that the craft was an

isosceles triangle shape, all three sides of which appeared to be continuous green - almost neon - light.

The National Gallery of Art's overview states that "The composition is at once dynamic--the dancing man and the musicians--and elegantly stable in the way Bingham arranged the figures to form an

isosceles triangle." The Gallery, which has borrowed and displayed this painting several times since the 1960s, finally purchased it from an undisclosed seller in May 2015.

(c) The

isosceles triangle case: we select O = (0,0), B = (2, 5), and A = (5,2), as shown in Figure 4(c).