4) Group the following 16 numbers into 4 groups of 4 numbers, explaining why have decided on these groups: '1, 1, 1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 27, 64, 64.'

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

it could be 1,3 and more others to create a cylinder.

step-by-step explanation: