sum of angles on any straight line

sum of interior angles in any triangle

sum of interior angles in any 4-sided figure

sum of co-interior angles across a pair of parallel lines

sum of angles at any point

each interior angle of a rhombus

each interior angle of a rectangle

angle that isosceles triangle's LOS makes with the base

sum of the 2 non-90-degree interior angles in a right-angled triangle

one of the interior angle of a right-angled triangle

Intersection of LOS of a RECTANGLE

Intersection of LOS of a RHOMBUS

Intersection of LOS of ISOSCELES triangle and its base

Intersection of LOS of EQUILATERAL triangle

Intersection of LOS of PARALLELOGRAM

Each interior angle in an EQUILATERAL triangle

Each interior angle in an ISOSCELES triangle

The other interior angle in a 30-60 right-angled triangle that is not $30\degree$

Each interior angle in an EQUILATERAL triangle

Each base angle of a RIGHT-ANGLED ISOSCELES triangle

Each interior angle of an ISOSCELES triangle

Angle made by any diagonal line and the side of a SQUARE 

Angle made by any diagonal line and the side of a RECTANGLE

An EQUILATERAL triangle has 3 LOS

An ISOSCELES triangle has 1 LOS

A SQUARE has 4 LOS

A RHOMBUS has 2 LOS

A PARALLELOGRAM has no LOS

Isosceles triangle

Equilateral triangle

Square

Rectangle

Parallelogram

1

2

3

4

no

1

2

3

4

no

1

2

3

4

no

1

2

3

4

no

Whether there are equal sides

Whether there are equal angles

Whether there are lines of symmetry

Whether there are parallel sides

Whether it is possible to plot in angles

Co-interior angles appear between AM and EZ, on either side of OH

$180\degree$ appear on either side of every straight line

OH is a transverse line

Corresponding angles can be found

Alternate angles can be found

C = D

G = L

B = F

J = K

D = F

D = J

G = F

K = L

D = K

G = B

C = J

F = L

B = J

D + G =  $180\degree$  

F + J =  $180\degree$  

J + K =  $180\degree$