Area of Triangle Revision

Area of Triangle Revision

Multiple Choice

The figure shows a triangle ABC. Find the height that corresponds to the base BC.

• BA

• BE

• AC

• AD

Fill in the Blanks

ABC is a triangle. What is the area of triangle ABC?

Ans:

cm²

Fill in the Blanks

ABCD is a square of side 12 cm. EC is $\frac{1}{3}$ the length of DC. Find the area of triangle BCE.

Ans:

cm²

Multiple Select

Which of the following figures show half of the figure is shaded?

• A

• B

• C

• D

Open Ended

Look at the 4 rectangles. 

- What can you say about the area of the shaded part(s) for each rectangle?

- What do you see that makes you say that?

 

Hints: Do the part(s) share any common base / height? You may wish to substitute values in to see if your reasoning makes sense.

Fill in the Blanks

The figure is made up of a rectangle, measuring 16 cm by 6 cm, and 2 triangles. Find the area of the shaded part.

Ans:

cm²

Fill in the Blanks

The figure is made up of triangles. AB is thrice of AE while AD = DC. The area of triangle AED is 10 cm². What is the area of triangle BDE?

Ans:

cm²

Fill in the Blanks

In the figure, ABFG and BCDE are squares. AD and AF are straight lines. AG = 10 cm. The area of square ABFG is 4 times the area of square BCDE. Find the shaded area.

Ans:

cm²

Fill in the Blanks

Look at the diagram. Triangle ABE has an area of 14 cm². Find the area of figure ABCED.

Ans:

cm²