3. 10÷5=2 (units) 10÷2=5 (persons)
Page 2: right angle: 1.6 acute angle: 3.5 obtuse angle: 1.4
Third, translate all three vertices of the triangle to the left by 9 squares, and then connect them.
Page 3: One, two, (3) right angle, (3) acute angle and (1) obtuse angle. 3、3,6,2
2. 1, 18÷3=6 (yuan) 5×6=30 (yuan) 2, (1)63÷9=7.