KS2 Primary Maths Age 9-13 - Geometry: Properties of Shapes - Explained

The video tutorial explains how to identify quadrilaterals with diagonals that cross at right angles. It demonstrates drawing diagonals in various shapes and checking if they intersect at right angles using a ruler. The tutorial also discusses how marks are allocated based on the accuracy of identifying such quadrilaterals. Students are encouraged to draw all diagonals and verify their intersections to ensure correct answers.

What is the key characteristic of diagonals in certain quadrilaterals?

• They are parallel to each other.

• They cross at right angles.

• They are perpendicular to the sides.

• They are equal in length.

When drawing diagonals in a rectangle, what should you check for?

• If they form a square.

• If they cross at right angles.

• If they are equal in length.

• If they are parallel to the sides.

Which tool is used to verify if diagonals intersect at right angles?

• A set square

• A compass

• A protractor

• A ruler

What is a common mistake students make when identifying quadrilaterals with right-angle diagonals?

• Not measuring the sides.

• Not drawing all the diagonals.

• Not using a compass.

• Not checking the angles of the sides.

How are marks allocated for correctly identifying quadrilaterals with right-angle diagonals?

• Two marks for all correct and none wrong.

• Three marks for identifying all shapes.

• No marks for incorrect answers.

• One mark for each correct identification.