Iba constructed a triangle ABC in her notebook. AB was 12 centimeters long. BC was 10 centimeters long. Select all measurements
1 answer:
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Answer:
Explanation:
Here, we want to get the value of x and y
From the given image, the angle y and 116 lie on a straight line
The sum of the angles on a straight line is 180 degrees
Thus:
The sum of the internal angles of a polygon can be calculated by the formula:
where n is the number of sides the polygon has
In the case of the given question, n is 4
Substituting the value of n, we have it that:
To get the value of x:
Formula used = (a + b) (a - b) = a² - b²