EXPLANATION

OF THE

SYMBOLS made uſe of in this SYNOPSIS.

H. # repreſents the Hypothenuſe of a right-angled triangle.

V. # Vertical angle.

B. # Baſe or ſide oppoſite V.

P. # Perpendicular from V on B.

S&s. # Sides about V; S the greater, s the leſs.

A & a. # Angles at B; A the greater, a the leſs.

m & n. # Segments of B by P; m the greater, n the leſs.

Ar. # Area.

Per. # Perimeter.

L. # Line from V to B, biſecting V.

λ. # Line from V to B, cutting B in a given ratio.

l. # Any other line ſpecified how drawn.

R. # Radius of inſcribed circle.

☉(sun). # Circle.

◻. # Square.

: # Ratio: thus, S: s ſignifies the ratio of the ſides.

V. # Vertical angle.

B. # Baſe or ſide oppoſite V.

P. # Perpendicular from V on B.

S&s. # Sides about V; S the greater, s the leſs.

A & a. # Angles at B; A the greater, a the leſs.

m & n. # Segments of B by P; m the greater, n the leſs.

Ar. # Area.

Per. # Perimeter.

L. # Line from V to B, biſecting V.

λ. # Line from V to B, cutting B in a given ratio.

l. # Any other line ſpecified how drawn.

R. # Radius of inſcribed circle.

☉(sun). # Circle.

◻. # Square.

: # Ratio: thus, S: s ſignifies the ratio of the ſides.