One corner of the triangle is 35 degrees larger than the other. Find the first and second if the third is 45 degrees.
February 27, 2021 | education
| We will solve this problem by writing an equation;
Let x be the measure of the first angle of a given triangle;
Then x + 35 is the measure of the second angle of this triangle;
We also know that the third angle is 45 °, and the sum of all the angles in this triangle is 180 °, we compose an equation of the following form:
x + x + 35 ° + 45 ° = 180 °;
2 * x + 80 ° = 180 °;
2 * x = 180 ° – 80 °;
2 * x = 100 °;
x = 100 °: 2;
x = 50 °.
50 ° is the measure of the first angle in this triangle;
50 ° + 35 ° = 85 ° is the measure of the second angle in this triangle.
Answer: 50 ° is the measure of the first angle in this triangle; 85 ° is the measure of the second angle in this triangle.
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