# CBSE Class 10-Mathematics: Questions and Answers Chapter – 6 Triangles Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 9**:

In an isosceles triangle ABC, if and then

(a)

(b)

(c)

(d)

**Answer**:

(c)

**Question 10**:

If and is not similar to , then which of the following is not true?

(a)

(b)

(c)

(d)

**Answer**:

(c)

**Question 11**:

**A certain right-angled triangle has its area numerically equal to its perimeter. The length of each side is an even integer, what is the perimeter?**

(a) 24 units

(b) 36 units

(c) 32 units

(d) 30 units

**Answer**:

(a) 24 units

**Question 12**:

In the given figure, if , then

(a) 3

(b) 4

(c) 5

(d) 6

**Answer**:

(a) 3

**Question 13**:

Length of an altitude of an equilateral triangle of side is

(a)

(b)

(c)

(d)

**Answer**:

(b)

**Question 14**:

If in two triangles ABC and PQR,

(a)

(b)

(c)

(d)

**Answer**:

(a)

**Question 15**:

The area of two similar triangles are and respectively. If the altitude of the bigger triangle is , then the corresponding altitude of the smaller triangle is

(a) 2.5 cm

(b) 2.8 cm

(c) 3.5 cm

(d) 3.7 cm

**Answer**:

(c) 3.5 cm

**Question 16**:

In a right-angled triangle, if base and perpendicular are respectively and , then the hypotenuse is

(a)

(b)

(c)

(d)

**Answer**:

(b)