Grade IX - Inter School Math Quiz

• Root 5

• -Root5

• 3 Root5

• 5

Which of the following equation(s) has as its solution no solution?  More than one answer may apply.

If mL1= 79, what is mL2 ? How do you know?

• mL2= 79 because alternate exterior angles are congruent

• mL2= 79 because vertical angles are always congruent

• mL2= 101 because linear pairs are supplementary

• mL2= 101 because it looks like it is 101 degrees in the diagram

Hey there, geometry detectives! Kai, Aria, and Oliver were playing a game of 'Name that Shape' and they stumbled upon a tricky one. Can you help them out?

Which quadrilateral(s) have the following properties: Diagonals are perpendicular to each other?

• Is it a rectangle and a square?

• Could it be a square and a parallelogram?

• Maybe a rectangle and a rhombus?

• Or is it a rhombus and a square?

Answer explanation

Rhombus have perpendicular diagonals. So, since squares have all the properties of a rhombus, they also have perpendicular diagonals.

Tara is planning to build a circular garden with a diameter of 12 meters. What is the best approximation of its circumference?

• 24 m

• 36 m

• 48 m

• 72 m

Vanya is calculating the mean of the squares of the first seven numbers in her math homework. What is the mean of the square of these numbers?

• 10

• 20

• 30

• 40

Which graph represents the table?

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