SST Class 105 MathsBlog

Vivek's Answers to Activity 3

Question 3:
The object is a Trapezium as a trapezium has a set of parallel lines so the horizontal and vertical pairs of angles are a total of 180 degrees as they make U shape figures.

Question 4
Not all parallelograms are squares as all sides of a square have the same length This does not apply to parallelograms as they can have different sets of lengths. Yet you cannot say that non of the parallelograms are squares as they can have the same length for all their lines.

Question 5

ED=BF so through this we can shift ED towards AE. We will be able to see that They are actually parallel lines. This is because the length in between the lines is always the same so they will never touch each other.

We know that the distance between the 2 lines are the same because ED is half the length of AD and BF is half the length of BC because as parallel lines they are supposed to be the same length across. So half of both of them are the same.

Maths E-learning

Q1. A Rhombus and Square needs to have four equal sides but a Square also has to have four right angled conners. That of which some Rhombi do not fulfill. Therefore not all Rhombi are squares.

Q3. The figure is a trapezium because it is the only quadrangle that has two sides opposing with the same length and the the other two with different length.

Q4. Not all Parallelograms are Squares because not all Parallelograms have four right angles. One example is in Picture 2

Question 1, 2 and 4 by Wu Shen

Q1) A square is a rhombus because the sides of the square and the rhombus are the same length and its is parallel to each other. However, a rhombus is not a square because the angles are not 90 degrees.

Q2) The figure is an isosceles trapezium. The right and left side of the isosceles trapezium is equal length and the top and bottom of the isosceles trapezium is parallel to each other. If one of the angles at the bottom is added with one at the top, it will be 180 degrees

Q4) No, all parallelogram is not squares. Parallelograms are squares only if all four sides are of the same length and all interior angles are 90^o.

Question 1, 3 and 4 by Aisyah Binte Mazlan

Q1) A square is a rhombus because all four sides of a square are equal in length. A square and a rhombus are both parallelograms with all the sides equal. However, a rhombus is not always a square, because the internal angles of a rhombus might not always be 90 degrees each.

Q3) The figure is a Trapezium. A Trapezium has two opposite lines that are parallel to one another, and two that are not. In the figure described, the two sides that are equal in length are the sides that are not parallel to each other, while the parallel lines are not the same length.

Q4) A square is a parallelogram because both pairs of opposite sides are parallel with each other. A square and a parallelogram both have parallel opposite sides. However, a parallelogram is not always a square, because the internal angles of a parallelogram might not always be 90 degrees each.

Q 1,2 and 4 done by Daniel and Alpha

Q1)A square is a rhombus because it has sides of equal length and they are all parallel to the opposite side.A rhombus is not a square because although it has sides of equal length and sides parallel to the opposite,there are no right angles.(90 degrees)

Q2)All of the above.A quadrilateral is a shape with 4 sides,which is true for both squares and parallelograms.Squares and parallelogram have sides that are parallel to the opposite as any quadrilateral without both pairs of sides being parallel is a trapezium.The only quadrilateral with just one pair of parallel lines is the trapezium.Any quadrilateral without any parallel lines is not a quadrilateral.

Q5)Parallelograms have the top and bottom pair shorter than the left and right pair.Sides of opposite sides also are parallel in a parallelogram.If the shape is slanted and meets the following requirements,the shape is a parallelogram.