Idhi has cut out a semi-circular piece from a plastic sheet and divided it into 8 equal parts as shown: She wants to use this to measure angles. Which of the following angles will she be able to measure accurately using this semi-circular piece?​ a. 30⁰
b. 45⁰
c. 60⁰
d. 100⁰

Step-by-step explanation:

Given

A semicircle divided into 8 parts

Required

Angle that can be measured with the piece

First, we calculate the minimum angle that can be calculated.

So, we have:

This implies that all angles that can be measured using the piece must be a multiple of 22.5 not greater than 180 degrees (i.e. not greater than the semicircle)

So, we have:

From the list of options, only 45 degrees appear in the possible values of

Hence:

i can't read the graph

step-by-step explanation: