The outer angle of the triangle is 140 °, the inner angles are not adjacent to it at 3: 4. Find all the interior corners of the triangle.
February 19, 2021 | education
| 1. The inside corner of the triangle is adjacent to the outside corner. Let’s define this angle.
180 – 140 = 40 °.
2. Let’s calculate the sum of the other two.
180 – 40 = 140 °.
3. Find out how many degrees fall on one part of the relationship.
140 / (3 + 4) = 140/7 = 20 °.
4. Degree measure of the second angle.
20 * 3 = 60 °.
5. The third angle is equal.
20 * 4 = 80 °.
Answer: 40 °, 60 °, 80 °.
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