# Grade 9 Math: Intro to Geometry Area of a Triangle

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### True or false? The following equation is the formula for the area of a triangle: $$area=\frac{base\times height}{2}$$

True
False
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### A right-angled triangle has a base of 6cm and a height of 5cm. What is the area?

15cm$$^2$$
30cm$$^2$$
10cm$$^2$$
5cm$$^2$$
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### A right-angled triangle has a base of 25cm and a height of 4cm. What is the area?

25cm$$^2$$
100cm$$^2$$
150cm$$^2$$
50cm$$^2$$
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### The area right-angled triangle is 27cm$$^2$$ has a base of 9cm. What is the height?

4cm
6cm
12cm
10cm
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### The area isosceles right-angled triangle is 60.5cm$$^2$$ What is the base and height?

11cm
22cm
5.5cm
12cm
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