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katrin [286]
3 years ago
13

What is the ratio of total shapes to triangles? Circle ⭕ triangle triangle circle ⭕ triangle triangle circle ⭕ triangle triangle

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
6 0
3:2. There's a total of 9 shapes, 6 triangles, and 3 circles. 
Next, you take the ratio of 9:6 and divide each number by 3, one at a time.
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ale4655 [162]

Let ∠1 be x

Let ∠2 be x-12

<h3>ATQ,</h3>

\rm(x - 12 )+ x = 90 \degree

\rm2x - 12 = 90 \degree

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\boxed{ \bf \: x = 51 \degree}

<h3>So,</h3>

\sf \: ∠1 = x \\  \sf \:  = 51 \degree

\sf \: ∠2 = x - 12 \\  \sf  = \: 51 - 12 \\  \sf∠2 = 39 \degree

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