Tag Archives: polygon

Sarin learns Shapes and Solids in school part 71 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Angles and Shapes.

Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ574

In the figure, ABDE is a trapezium and ABC is an isosceles triangle. BAE = 400, CBD = 200 and CDE = 890.

            a.         Find BCA.

            b.         Find AED.

upq574-1

 

…Click here to go to solution…

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Sarin learns Shapes and Solids in school part 70 (Math Question)

Standard

The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Angles and Shapes.

Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.

Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ566

The figure below is made up of three triangles. ABC is an equilateral triangle, BCD is a right-angle triangle and DEF is an isosceles triangle. ∠ EFD = 680. Find the sum of ∠ CDE and ∠ABD.

UPQ566-1

 

…Click here to go to solution…

Sarin learns Perimeter, Area and Volume in school part 10(Math Question)

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You can read posting Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of perimeter, area and volume.

Upper primary school mathematics question UPQ94

Figure pqrs , not draw to scale, is a 4-sided polygon. Line pt and line ur are perpendicular to line sq. Given uv = ur, st = tv = vq and area pts + area vrq = 27cm2. Find the area of the polygon.

Solution:

…Click here to read the solution…

Sarin learns Shapes and Solids in school part 9(Math Question)

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Read posting Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles. Read also posting Sarin learns Shapes and Solids in school (Math Concept) to know about shapes. 

Upper primary school mathematics question UPQ66

In the figure below, PQRS is a trapezium. SRT is a straight line. Find ∠PQR.

…Click here to go to solution…

Sarin learns Shapes and Solids in school(Math Concept)

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Shapes

 When two pairs of parallel lines intersecting each others as left diagram.

 If length of lines ab, bc, cd & ad are equal as well as the angles of intersection are right angles.

 The four line form a square.    

If line bc shift to the right and we have length of line ab equal line dc and length of line ad equal to line bc. If the angles of intersection still remain as right angles. The four lines form a rectangle.

…To read here to read on….