Default Title

Question (11)

QN0016197

If two angles of a triangle are equal and the third angle is 50°, each equal angle is:

(A) 55°
(B) 60°
(C) 65°
(D) 70°

Correct Answer: C

Explanation:

(180° − 50°) ÷ 2 = 65°.

Link:

Report Error

Question (12)

QN0016198

The third angle of a triangle having angles 15° and 150° is:

(A) 5°
(B) 10°
(C) 15°
(D) 20°

Correct Answer: C

Explanation:

180° − 165° = 15°.

Link:

Report Error

Question (13)

QN0016199

A triangle has angles in the ratio 1 : 2 : 3. The largest angle is:

(A) 30°
(B) 60°
(C) 90°
(D) 120°

Correct Answer: C

Explanation:

Angles are 30°, 60°, 90°.

Link:

Report Error

Question (14)

QN0016200

Which set of angles cannot form a triangle?

(A) 70°, 60°, 50°
(B) 80°, 40°, 60°
(C) 90°, 50°, 50°
(D) 100°, 30°, 50°

Correct Answer: C

Explanation:

Sum = 190°.

Link:

Report Error

Question (15)

QN0016201

If one angle of a triangle is twice another and the third angle is 60°, the two related angles are:

(A) 40°, 80°
(B) 30°, 60°
(C) 20°, 40°
(D) 50°, 100°

Correct Answer: A

Explanation:

x + 2x + 60 = 180.

Link:

Report Error

Question (16)

QN0016202

The angles of a triangle are x°, x°, and 40°. Find x.

(A) 60°
(B) 70°
(C) 80°
(D) 90°

Correct Answer: B

Explanation:

2x + 40 = 180.

Link:

Report Error

Question (17)

QN0016203

A triangle has angles 48°, 72°, and x°. The value of x is:

(A) 50°
(B) 60°
(C) 70°
(D) 80°

Correct Answer: B

Explanation:

180° − 120° = 60°.

Link:

Report Error

Question (18)

QN0016204

If the sum of two angles of a triangle is 125°, the third angle is:

(A) 45°
(B) 55°
(C) 65°
(D) 75°

Correct Answer: B

Explanation:

180° − 125° = 55°.

Link:

Report Error

Question (19)

QN0016205

Which pair of angles can belong to a triangle?

(A) 100°, 90°
(B) 80°, 100°
(C) 60°, 110°
(D) 70°, 80°

Correct Answer: D

Explanation:

Their sum is less than 180°.

Link:

Report Error

Question (20)

QN0016206

A triangle has angles in the ratio 2 : 3 : 4. The smallest angle is:

(A) 20°
(B) 30°
(C) 40°
(D) 50°

Correct Answer: C

Explanation:

Angles are 40°, 60°, 80°.

Link:

Report Error

Question (11)

If two angles of a triangle are equal and the third angle is 50°, each equal angle is:

Explanation:

Link:

Question (12)

The third angle of a triangle having angles 15° and 150° is:

Explanation:

Link:

Question (13)

A triangle has angles in the ratio 1 : 2 : 3. The largest angle is:

Explanation:

Link:

Question (14)

Which set of angles cannot form a triangle?

Explanation:

Link:

Question (15)

If one angle of a triangle is twice another and the third angle is 60°, the two related angles are:

Explanation:

Link:

Question (16)

The angles of a triangle are x°, x°, and 40°. Find x.

Explanation:

Link:

Question (17)

A triangle has angles 48°, 72°, and x°. The value of x is:

Explanation:

Link:

Question (18)

If the sum of two angles of a triangle is 125°, the third angle is:

Explanation:

Link:

Question (19)

Which pair of angles can belong to a triangle?

Explanation:

Link:

Question (20)

A triangle has angles in the ratio 2 : 3 : 4. The smallest angle is:

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY