# Triangles and Circles (IMO- Mathematics Olympiad (SOF) Class 9): Questions 62 - 65 of 79

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## Question number: 62

» Triangles and Circles

MCQ▾

### Question

The area of a quadrilateral, one of whose diagonals is 30 cm long and the perpendiculars from the other two vertices are 19 cm and 11 cm respectively is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 63

» Triangles and Circles

MCQ▾

### Question

DEF is an equilateral triangle of side. S, T and U are midpoints of DE, EF and DF respectively. The area of triangle STU is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 64

» Triangles and Circles

MCQ▾

### Question

The sides BC, CA and AB of are produces in order to form exterior angles and, then is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 65

» Triangles and Circles

MCQ▾

### Question

In the medians PS, QT and RU pass through O. if, and then OS is ________

### Choices

Choice (4) Response

a.

2.6

b.

2.5

c.

2.9

d.

2.3

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