2001
Mathematics
67ca00ce0c643c71d77dee1f
In the figure PQR a straight line segment, PQ = QT. Triangle PQT is an isosceles triangle, < SRQ is 75° and < QPT IS 25°. Calculate the value of < RST
A.
50°
B.
25°
C.
55°
D.
45°
Correct Answer: 55°
Explanation
< T = x/1 = 25° (PQ = QT) < SQR = 2(25°) = 50° (sum of interior angle) < Q + < R + < S = 180° 50° + 75° + < S = 180° = 125o + < S = 180° < S = 180° - 125° = 55°
< T = x/1 = 25° (PQ = QT) < SQR = 2(25°) = 50° (sum of interior angle) < Q + < R + < S = 180° 50° + 75° + < S = 180° = 125o + < S = 180° < S = 180° - 125° = 55°THIS WEEK's
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