1 . △ABC, AB =AC, ∠A=80° ∠B=?

• A. 60°
• B. 70°
• C. 50°
• D. 80°

Answer: Option C

Explanation:

2 . △ABC

• A. $68°$
• B. $45°$
• C. $34°$
• D. $39°$

Answer: Option C

Explanation:

3 . △ABC-∠A=40°, ∠B=70°

• A. সমকোণী
• B. স্থুলকোণী
• C. সমদ্বিবাহু
• D. সমবাহু

Answer: Option C

Explanation:

4 . △ABC

• A. $x^2বর্গমিটার$
• B. $2xবর্গমিটার$
• C. ${\left(\frac{x}{2}\right)}^2বর্গমিটার$
• D. ${\left(\frac{\sqrt{x}}{3}\right)}^3বর্গমিটার$

Answer: Option B

Explanation:

5 . △ABC

• A. $105°$
• B. $110°$
• C. $90°$
• D. $100°$

Answer: Option B

Explanation:

6 . △ABC

• A. $90°$
• B. $60°$
• C. $120°$
• D. $150°$

Answer: Option D

Explanation:

7 . △ABC

• A. $90°$
• B. $100°$
• C. $105°$
• D. $110°$

Answer: Option C

Explanation:

8 . △ABC

• A. $AD>AC$
• B. $AB>AC$
• C. $AB$
• D. $BD$

Answer: Option C

Explanation:

9 . △ABC

• A. AD>AC
• B. AB>AC
• C. AB
• D. BD

Answer: Option A

Explanation:

10 . △ABC

• A. $8\sqrt{3}$
• B. $12\sqrt{3}$
• C. $24\sqrt{3}$
• D. $48\sqrt{3}$

Answer: Option B

Explanation:

11 . △ABC

• A. 105°
• B. 110°
• C. 90°
• D. 10°

Answer: Option A

Explanation:

12 . △ABC

• A. সুক্ষ্মকোণী ত্রিভুজ
• B. স্থুলকোণী ত্রিভুজ
• C. সমকোণী ত্রিভুজ
• D. সমদ্বিবাহু ত্রিভুজ

Answer: Option C

Explanation:

13 . △ABC is a right angle ∠ACB=90°, AC=16, BC=12, CD is perpendicular to AB and AD = 12.8. How long is CD?

• A. 9.5
• B. 9
• C. 6.5
• D. 9.6

Answer: Option D

Explanation:

14 .  In  △ABC , AB=AC and  ∠BAC = 50 °  . What is the value of  ∠ABC ?

• A. 30 °
• B. 40 °
• C. 75 °
• D. 65 °

Answer: Option D

Explanation:

15 .

• A. $x^2$বর্গমিটার
• B. $2x$বর্গমিটার
• C. ${\left(\frac{x}{2}\right)}^2$বর্গমিটার
• D. ${\left(\frac{\sqrt{x}}{3}\right)}^3$বর্গমিটার

Answer: Option B

Explanation: