WEBS Teachers' Resources ebook_final | Page 475

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.