# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 654 - 658 of 1022

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## Question 654

Edit

### Question

MCQ▾

The sides of a measure 3 cm, 4 cm and 5 cm. The area of the triangle is ________.

### Choices

Choice (4)Response
a.
b.
c.
d.All of the above

## Question 655

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### Question

MCQ▾

In the figure (not drawn to scale), ABCD is square, ABE is a straight line. Find .

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 656

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### Question

MCQ▾

In the figure (not drawn to scale), ADF and BEF are triangles and EC = ED, find y.

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 657

Edit

### Question

Match List-Ⅰ List-Ⅱ▾

Match the following.

 List-Ⅰ List-Ⅱ (A)Circumcenter (i)The point at which the three angle bisectors of a triangle meet (B)Incenter (ii)The point at which the medians of a triangle meet (C)Orthocenter (iii)The point of intersection of the perpendicular bisector of the sides of a triangle (D)Centroid (iv)The point at which the altitudes of a triangle meet

### Choices

Choice (4)Response
• (A)
• (B)
• (C)
• (D)
a.
• (i)
• (iii)
• (iv)
• (ii)
b.
• (iv)
• (i)
• (ii)
• (iii)
c.
• (ii)
• (iii)
• (iv)
• (i)
d.
• (iii)
• (i)
• (iv)
• (ii)

## Question 658

Edit

### Question

MCQ▾

The three angles of a triangle are in the ratio 1: 2: 1, then the greatest angle is ________.

### Choices

Choice (4)Response
a.
b.
c.
d.