passpadi

2002

Mathematics

JAMB

The triangle POR is

A.

an isosceles triange

B.

an obtuse angle

C.

a scalene triangle

D.

an equilateral triangle

Correct Answer: an isosceles triange

Explanation

< PRQ = 180° - 128° = 52° = < R < P + < R + < Q = 180° 76° + 52° + < Q = 180° 128° + < Q = 180° < Q = 180° - 128° = 52° PQR is an isosceles

< PRQ = 180° - 128° = 52° = < R < P + < R + < Q = 180° 76° + 52° + < Q = 180° 128° + < Q = 180° < Q = 180° - 128° = 52° PQR is an isosceles
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