GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 281:

• JAMB 1987

An (n - 2)² sided figure has n diagonals. Find the number n diagonals for a 25-sided figure

A. 7
B. 8
C. 9
D. 10

Question 282:

• JAMB 1987

In the diagram, POQ is a diameter, 0 is the centre of the circle and TP is a tangent. Find the value of x

A. 30^o
B. 40^o
C. 45^o
D. 50^o

Question 283:

• JAMB 1987

In the diagram above, QR // TS, QR : TS = 2.3, Find the ratio of the area of triangle PQR to the area of the trapezium QRST.

A. 4:9
B. 4:5
C. 1:3
D. 2:3

Question 284:

• JAMB 1987

Three angles of a nonagon are equal and the sum of six other angles is 1110^o. Calculate the size of one of the equal angles.

A. 210^o
B. 150^o
C. 105^o
D. 50^o

Question 285:

• JAMB 1987

In the figure, find the value of x

A. 110^o
B. 100^o
C. 90^o
D. 80^o