POLYGONS
NAME: …………………………………………………………………………………………………………GROUP…………..
1. (2 points) Calculate:
a) 81 �12 : 3 � 5�
(10 � 9 � 2) � 2 �
� 5 3 � 1 1
b) 5 � � � � � : �
� 6 4 � 2 3
� 1 � � 2 �
9 : �3
� � � 3: �1
� �
� 2 � � 3 �
c) �
3
2
: 3 ·3
4 3 2
d) � � � ��
2. (2 points)
a)( 0,5p)Construct a triangle with a base of 6 cm and angles of 60º and 45º.
b) (1p)Draw the three perpendicular bisectors and check that the three of them have a
common point. Which is its name?
c)(0,5p) Use a compass to draw the circumcircle.