Cut a paper in such a way that one of the angles formed is less than a right angle.
The angle so formed is an acute angle.
- Obtuse Angle
Cut a sheet of paper in the form of a triangle in such a way that one of the angles
formed is more than a right angle. The angle so formed is an obtuse angle.
- Angle 45^0
Any paper which forms 90^0 at its vertices, when folded along its vertex once again
forms 45^0 on either side of the impression
- Angle 60^0 , 30^0
Fold a sheet of paper exactly into two halves, either lengthwise or widthwise. Now
bring one lower corner of the paper to touch the crease formed at the middle and fold
it accordingly to make another crease dividing the lower corner into two parts. The
two angles formed on either side of the crease thus making angles of 30^0 and 60^0
respectively.
30060
0
A
B
AB
C
O
45 O
