General SAT (College Board) Mathematics: Questions 1 of 498
Appeared in Year: 2008
Question MCQ▾
If the average (arithmetic means) of the measures of two non-congruent angles of an isosceles triangle is , which of the following is the measure of one of the angles of the triangle? (January)
Choices
Choice (5) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | ||
e. |
Answer
b.
Explanation
- Let, triangle ABC be isosceles triangle.
- From question, the average of the measure of two non – congruent angles is . Therefore,
and are non – congruent angles.
- As we know,
- From equation (1) ,
- Substitute this value of in equation (1) ,
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