Write two expressions for the perimeter of the figure. 18x
16
9x
4x
Note: The figure is not drawn to scale.
(a) Use all four side lengths.
perimeter = 18 + 9 + 9 + 4

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)