Find Missing Angles In A Triangle Using Complementary And Supplementary Angles -Multiple Choice Questions Quiz

Interactive MCQs on the topic “Find Missing Angles In A Triangle Using Complementary And Supplementary Angles”:

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Question 1:If two angles in a triangle are complementary, what is their sum?

(A) 90°
(B) 180°
(C) 60°
(D) 120°

Question 2:In a triangle, one angle is 90°, and another is 40°. What is the third angle?

(A) 40°
(B) 30°
(C) 60°
(D) 50°

Question 3: If angle A = 60° and angle B = 30°, what is angle C in triangle ABC?

(A) 60°
(B) 90°
(C) 30°
(D) 45°

Question 4:Angles A and B in a triangle are supplementary. If A = 120°, what is angle B?

(A) 30°
(B) 45°
(C) 60°
(D) 90°

Question 5:In triangle XYZ, angle X = 70°, and angle Y = 20°. Are angles X and Y complementary or supplementary?

(A) Complementary
(B) Supplementary
(C) Neither
(D) Reflex

Question 6:A triangle has angles 40°, 50°, and ___. What is the missing angle?

(A) 100°
(B) 90°
(C) 80°
(D) 70°

Question 7:One angle of a triangle is 110°. The other two angles are equal. Find each of the equal angles.

(A) 35°
(B) 40°
(C) 45°
(D) 50°

Question 8:In triangle PQR, ∠P = 90° and ∠Q = 45°. What type of triangle is this, and what is ∠R?

(A) Acute, 30°
(B) Equilateral, 60°
(C) Right, 45°
(D) Obtuse, 100°

Question 9:If ∠A = 60° and ∠B = 60°, what is ∠C, and what kind of triangle is this?

(A) Isosceles, 50°
(B) Equilateral, 60°
(C) Right, 90°
(D) Scalene, 70°

Question 10:Two angles in a triangle measure 100° and 40°. Are they supplementary? What is the third angle?

(A) Yes, 60°
(B) Yes, 80°
(C) No, 20°
(D) No, 40°