Mental Calculation - 4, 6, 7 April 2022

Mental Calculation

4 April 2022

By Magdalena 02230

Poll

What shape is this?

• square

• rectangle

• circle

• triangle

Poll

What shape is this?

• rectangle

• circle

• triangle

• square

Poll

How many angles does a rectangle have?

• 3
• 4
• 5
• 6

Poll

What shape has 3 sides, 3 angles, and 3 vertices?

• trapezoid
• triangle
• square
• quadrilateral

Poll

Which figure must have 2 pairs of parallel sides and all sides equal in length?

• Trapezoid (trapesium)

• Square

• Paralleleogram (jajar genjang)

• Rectangle

Poll

The shape of a roof tile on my house is shown. Opposite sides of the roof tile are parallel. All sides that meet are perpendicular but not equal in length. Which term describes the shape of the roof tile?

• trapezoid

• rhombus (belah ketupat)

• rectangle

• square

Poll

Which figure must have 4 right angles

• parallelogram

• rhombus

• trapezoid

• square

Poll

Which figure must have 4 right angles?

• trapezoid

• rectangle

• rhombus

• parallelogram

Poll

Which of the following shapes is a rectangle?

Open Ended

EFGH is a rectangle. What is the length of side EF?

Mental Calculation

6 April 2022

By Magdalena 02230

Open Ended

EFGH is a rectangle. What is the length of side EH?

Open Ended

PQRS is a square. What is the length of side SR?

Poll

Mark ALL that are TRUE about a SQUARE

• A square has 4 sides

• A square has 4 right angles

• Opposite sides of a square are parallel

• All sides are equal in length

• A square is a special type of rectangle

Poll

Which would be the best classification for the triangle shown?

• Scalene

• Equilateral

• Scalene

• Isoscelese

Poll

What type of triangle has 2 sides that are equal?

• Scalene

• Equilateral

• Isosceles

• Other

Poll

Can a triangle can have 2 right angles in it?

• Yes
• No
• Sometimes
• It can have a maximum of 3 right angles.

Poll

A triangle which has 2 equal sides is called…

• Equilateral triangle

• Right angle

• Isosceles triangle

Poll

I have 3 sides but all sides are  different  each other.

What kind of triangle  am I?

• Scalene triangle

• Equilateral triangle

• Isosceles triangle

Poll

Which picture is shown as a isosceles triangle?

Poll

Which term best describes the picture?

• right scalene triangle

• right isosceles triangle

• equilateral right triangle

• acute scalene triangle

Mental Calculation

7 April 2022

By Magdalena 02230

Poll

I have two opposite sides equal in length. Who am I?

• Rectangle

• Square

• Circle

Poll

I have four sides. All my sides are equal in length. Who am I?

• Rectangle

• Square

• Triangle

• Circle

Poll

What shapes make these figures?

• triangle and circle

• triangle and rectangle

• triangle and square

• rectangle and square

Open Ended

Find all the triangles.

Write your answer in number words.

Poll

If we put those two shapes together, we can make a _______________.

• triangle

• square

• rectangle

• cricle

Poll

I have four sides and four corners, but my sides are not the same length.  Which shape can I be?

• Square
• Triangle
• Rectangle
• Circle

Poll

Look at the picture! Is this a square?

• yes

• no

Poll

Look at the picture! ABCD is a rectangle. Its length is twice its breadth. BC is 15 cm. So, AB the length of AB is...

• 28 cm

• 30 cm

• 50 cm

Poll

Look at the picture! The name of the shape in the picture is...

• Equilateral triangle

• Isosceles triangle

• scalene triangle

Poll

A triangle with three sides of different lengths and three that are not equal called...

• scalene triangle

• Isosceles triangle

• Equilateral triangle