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Natali [406]
3 years ago
12

The measures of the angles of a triangle are in the extended ratio 2:2:8. What is the measure of the smallest angle?

Mathematics
2 answers:
zepelin [54]3 years ago
7 0
We know that the ratio is;

2:2:8

The angles in a triangle add up to give 180°

We can think of there being twelve "parts" that add up to 180°

2x + 2x + 8x = 180  \\  \\ 12x = 180  \\  \\ x =  \frac{180}{12}  \\  \\ x = 15

So our ratio is;

2*15 : 2*15 : 8*15  \\  \\ = 30 : 30 :120

So the smallest angle is 30°
patriot [66]3 years ago
7 0


Let the three angles of the triangle be represented by 2x, 2x, and 8x.

2x + 2x + 8x = 180

x = 15 and 2x = 30.

The angles of the triangle are 30, 30, and 120.

The smallest angle has measure 30.

Note that  30:30:120 is equivalent to the given ration 2:2:8

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