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Grade 8 Geometry Diagnostic

Total questions: 18

Worksheet time: 5hrs 30mins

Name
Class
Date
1.

What does area mean?

a)

The distance around a shape

b)

Half the distance around a shape

c)

The amount of space outside a shape

d)

The amount of space inside a shape

2.
What does perimeter mean?
a)
The amount of space inside a shape
b)
The distance around a shape
c)
The amount of space inside a shape divided by two
d)
Half the distance around a shape
3.

Find the perimeter of this shape

4 lines
4.

Find the perimeter of the shape below

4 lines
5.

What is the area of the right triangle?

a)

32 units2

b)

20 units2

c)

10 units2

d)

17 units2

6.

Find the area of the shape below

4 lines
7.
What is the diameter?
a)
8
b)
16
c)
10
d)
4
8.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
9.

Find the area of the circle. Round your answer to 2 decimal places

a)

43.96 units2

b)

153.86 units2

c)

87.82 units2

d)

307.72 units2

10.

Find the amount of wrapping paper needed to wrap a gift with dimensions shown. Use "cm^2" to show "cm squared"

4 lines
11.

Use "cm^3" to show "cm cubed"

4 lines
12.
True/False:  Every rhombus is a square.
a)
True - they both have 4 equal sides
b)
True - the diagonals are perpendicular
c)
False - a rhombus CAN'T have 90 degree angles
d)
False - a rhombus won't always have 90 degree angles. 
13.

Explain, in your own words, what a parallelogram is

4 lines
14.

Find the area of the shape below. Round your answer to 2 decimal places. Write "m^2" to show "metres squared"

4 lines
15.

Challenge: Find the volume of the cylinder. Use "cm^3" to show "cm cubed"

4 lines
16.

Challenge: Find the volume of the cone. Round your answers to the nearest tenth. Use 3.14 for π.

4 lines
17.

Challenge: Find the area AND perimeter of the shape below. Round your answers to 2 decimal places

4 lines
18.

Challenge: Find the Surface Area of the shape shown. Use "m^2" to show "metres squared"

4 lines