Mental Calculation - 22 March 2022

Mental Calculation

24 March 2022

By Magdalena 02230

Poll

Angles is ...

• formed when two straight lines meet at a point

• formed when one straight lines meet at a point

• formed when two straight lines parallel

• formed when two straight lines meet at a circle

Multiple Choice

The straight line of the angle in this picture is...

• KL dan KM

• LK dan LM

• ML dan MK

Multiple Choice

The straight line of the angle in this picture is...

• AB dan AC

• BA dan BC

• CA dan CB

Poll

The point of this image is...

• A

• B

• C

Poll

In a shape, each angle is formed by two straight sides meeting at a ....

• shape

• corner

• rectangle

• triangle

Poll

How many angles form in this picture ?

• 1

• 2

• 3

• 0

Poll

The rectangle has 4 angles and ... side

• 1

• 2

• 3

• 4

Poll

What we call for the B ?

• straight line

• arm

• point

• corner

Poll

how many angles in the picture

• 4

• 5

• 6

• 7

Poll

If you are asked to draw a shape that has 4 right angles, then you will draw a shape

• equilateral triangle (segitiga sama sisi)

• Rectangle (persegi panjang)

• circle (lingkaran)

Mental Calculation

28 March 2022

By Magdalena 02230

Poll

The picture is a angles...

• obtuse

• acute

• right

• straight

Poll

The picture is a angles...

• acute

• right

• obtuse

• straight

Poll

The angle in the figure is...

• acute

• straight

• right

• obtuse

Poll

The angle in the figure is...

• acute

• right

• straight

• obtuse

Poll

How many acute angles in the picture

• 1

• 2

• 3

• 4

Poll

What angles does the picture on the side consist of ? (mention 2 angles)

• acute

• straight

• obtuse

• right

Poll

What do you call an angle that measures 90 degrees?

• right angle

• obtuse angle

• acute angle

• equilateral

Poll

An angle that measures less than 90 degrees is ---.

• acute

• right

• obtuse

• parallel

Poll

What kind of angles are these?

• acute

• right

• obtuse

Poll

Which shape has 2 right angles?

Mental Calculation

30 March 2022

By Magdalena 02230

Poll

What is a obtuse angle

• It is an angle which is more than 180*

• It is an angle which is less than 90*

• It is an angle which is more than 90*

• It is an angle which is exactly 90*

Poll

What kind of angle is this???

• right

• acute

• obtuse

• straight

Poll

What type of angle is shown?

• acute
• obtuse
• right
• straight

Poll

A right angle is at what degree

• 180

• 20

• 90

• 80

Poll

Name this angle.

• acute
• right
• obtuse
• none of the above

Poll

Name this angle.

• acute
• right 
• obtuse
• none of the above

Poll

This is a...

• square

• rectangle

• rhombus

Poll

What shape is this?

• square

• rectangle

• rhombus

Poll

Think about the name of this game. What shape is it played in?

• square

• rectangle

• rhombus

Poll

What does a rectangle and square have in common?

• four equal sides

• four 90 degree angles

• two sets of different side lengths

Poll

A square has 4 equal sides and 2 right angles.

• True
• False

Mental Calculation

31 March 2022

By Magdalena 02230

Poll

In a rectangle, opposite sides are eq.

• True

• False

Poll

In a rectangle, all sides are eq.

• True

• False

Poll

What is the length of the AD side?

• 6

• 4

• 16

• 12

Poll

Which of these shapes has 4 equal sides?

• Square only

• Rectangle only

• Both the square and rectangle

• None of the shapes

Poll

Which of these shapes has opposite sides that are equal, but not all the sides are equal?

• Square only

• Rectangle only

• Both the square and rectangle

• None of the shapes

Poll

In this square, AB = ______. (click on the picture to enlarge)

• AB = BC = CD = AD

• AB = BC only. The rest of the lines are not equal.

• AB = BC = CD only. AD is not equal

• AD is not equal to any of the lines

Poll

In this rectangle, JK = ______. (click on the picture to enlarge)

• JK = KL = LM = MJ

• JK = ML

• JK = KL

• JK = JM

Poll

In this rectangle, MJ = ______. (click on the picture to enlarge)

• MJ = JK = KL = ML

• MJ = KJ

• MJ = LK

• MJ = LM

Poll

What is the key difference between a square and a rectangle?

• A square has 4 right angles but a rectangle does not.

• A square has 4 equal sides but a rectangle has no equal sides.

• A square has 4 equal sides but for a rectangle, only the opposite sides are equal.

• A square has 4 pairs of perpendicular lines but a rectangle only has 2 pairs of perpendicular lines.

Poll

Define Obtuse

• Less than 90
• Exactly 90
• Greater than 90 and less than 180
• Exactly 180

Mental Calculation

4 April 2022

By Magdalena 02230

Multiple Choice

What type of angle is shown?

• Obtuse

• right

• acute

• straight

Mental Calculation

6 April 2022

By Magdalena 02230