The figure below shows that a circular piece of paper is folded along the dotted lines in steps 1, 2, and 3 to get the final shape. The dotted lines divide a shape into equal parts. What is the measure of the angle marked in the final shape?
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Answer:
It's 30⁰
Explanation:
Because, as we know a circle has a complete angle at Centre i.e. 360⁰. In step 1, a line is drawn(diameter) through the centre that makes a straight angle i.e. 180⁰. In step 2, a line is drawn Perpendicular to the previous line(diameter of the circle) that makes a right angle i.e. 90⁰. In step 3, the quarter of the circle is divided into 3 parts, meaning that, the 90⁰ angle is divided into 3 parts i.e. 90/3= 30⁰.
Therefore, the angle marked in the final shape is 30⁰
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