# 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.

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

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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.

Solutions

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.

Solutions

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!

Click the button below.

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.

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To Your Child’s Success,

Ms Nelly Ke
Math Specialist
Jimmy Maths and Grade Solution Learning Centre

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