One of the outer corners of the triangle is 70 degrees. Find the sum of the two inner, non-adjacent angles of the triangle.
| September 25, 2021 | education
The outside corner of the triangle, equal to 70 °, is adjacent to the inside corner of the triangle.
The sum of adjacent angles is 180 °, hence the inner angle of the triangle is:
180 ° – 70 ° = 110 °.
The sum of all the angles of any triangle is 180 °, therefore the sum of the remaining angles of this triangle is:
180 ° – 110 ° = 70 °.
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