1.

State 'T' for true and 'F' for false. (1) In a triangle, the measure of exterior angle is equal to the sum of the measure of interior opposite angles. (2) The sum of the measures of the three angles of a triangle is\[{{90}^{o}}\]. (3) A perpendicular is always at \[{{90}^{o}}\] to a given line or surface.

A. (1)    (2)    (3) T    T     F                
B. (1)    (2)    (3) T     F     F                
C. (1)    (2)    (3) T    F     T                
D. (1)    (2)    (3) F    T     F
Answer» C. (1)    (2)    (3) T    F     T                


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