Final Cover - For Printing

Similarly, the other types of triangles are written as follows:

Isosceles triangle

Scalene triangle

Like modification of triangle, the other occasion where modification is used is in the case
of angles. The shape of the angle is indicated as

Use the same logic used in the case of triangle in modifying the angle and therefore, the
modified figures are indicated as follows:

Obtuse angle

Acute angle

Alternate exterior angle

Interior angle

You can see from this section that about 100 mathematical Braille codes are pertaining to
the shape indicator, structural modifier and the inner shape modifier. Mastery over this
section is important for learning geometry.

Base Code 22: Dots 1, 4, 5 and 6. Mirror image of (p)
Fraction Opening Indicator
The reverse of (p) is indicated by the dots 1,4,5 and 6. In English Braille contraction, the
reverse (p) indicates (th), and in mathematics, it indicates the opening of a simple

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