Folding Angle Questions

 

The primary goal of this math revision note is to enhance your child’s proficiency in solving folding angle problems.

These folding angle questions assess your child’s capacity to imagine the appearance of a piece of paper before and after it is folded. They should utilise this visualisation of the folding process along with their prior knowledge of angle properties to determine the required angle in the question.

 

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Folding Angle Question 1

Gizelle has a rectangular piece of paper. She folded it along the dotted line as shown. Find ∠x.

Folding Angle Questions

 

Solutions

 

Folding Angle Questions

 

With this analysis, we now know that:  38° + 2x = 90°

Therefore, 2x = 90° − 38° = 52

∠x = 52° ÷ 2

     = 26° (Ans)

 

 

 

Folding Angle Question 2

A rectangular piece of paper was folded as shown. Find ∠x.

Folding Angle Questions

Solutions

Folding Angle Questions

 

Folding Angle Questions

 

Folding Angle Questions

 

Notice that all the angles that are marked out here form a straight line.

Recall: the angle of a straight line = 180°

Hence, we can now find x:

x = 180°  29° × 2 − 36° × 2

   = 180°  58°  72° 

   = 50° (Ans)

Test your child’s understanding by taking this short quiz!

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Before you go, you might want to download this entire revision notes in PDF format to print it out for your child, or to read it later.

This will be delivered to your email inbox.

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