1) The measure of angle T is 100
2) The measure of angle S is 40
Answer is A but in my opinion answer should be D not A. Can anybody explain me plzz?
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1) The measure of angle T is 100
The triangle is isocele so two angles have the same value. T is 100, and given you have 180° in a triangle, the other two angles have the same values:40 each
Sufficient.
2) The measure of angle S is 40
Angle S is 40. We could have S=40 T=40 and R=100 or S=40 T=100 or R=40 or S=40 T=70 R=70
Insufficient.
The triangle is isocele so two angles have the same value. T is 100, and given you have 180° in a triangle, the other two angles have the same values:40 each
Sufficient.
2) The measure of angle S is 40
Angle S is 40. We could have S=40 T=40 and R=100 or S=40 T=100 or R=40 or S=40 T=70 R=70
Insufficient.
