# 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__

__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__

__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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