# In isosceles triangle RST what is the measure of angle R? GMAT Explanation

In isosceles triangle RST what is the measure of angle R?

(1) The measure of ∠T is 100°.

(2) The measure of ∠S is 40°.

**Correct Answer:** A

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In isosceles triangle RST what is the measure of angle R?

(1) The measure of ∠T is 100°.

(2) The measure of ∠S is 40°.

**Correct Answer:** A