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Class 9 Maths Practice Test: Triangles - Angle Sum Property of a Triangle
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Angle Sum Property of a triangle states that the sum of all the interior angles of a triangle is equal to 180°.

Class 9 Maths Practice Test: Triangles - Angle Sum Property of a Triangle
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16 Questions

1. From the diagram given below, what is the value of ∠CBA?
2. Find the angles ∠PSR and ∠PSQ if PS is angle bisector of ∠P and the angles of ∆ ABC are in the ratio 1 : 3 : 5.
3. Find the angle ∠BCD if AD || BC and x = 2y/3 and y = 3z/5.
4. Find x if PQ || RS and MO and LO are angle bisectors.
5. Which among the following relation is correct if PO and RO are angle bisectors?
6. From the diagram given below, what is the value of ∠ACB?
7. Find the angle ∠SOR if PQ || RS and ∠OSR : ∠SRO = 2 : 3.
8. Find the angle ∠MQR if QM ⊥ PR and ∠Q = 90°.
9. Which among the following relation is correct if BM ⊥ AC and BN is angle bisector of ∠ABC?
10. Find the angles (∠P, ∠Q, ∠R) of the triangle if a + b = 120° and a – c = 30°.
11. Find the type of the ∆ ABC if angle B and C are equal.
12. Find x if PQ || RS and ∠1 : ∠2 = 3 : 5.
13. The sum of the angles of a triangle is equal to __________
14. Which of the following relation between x and y is correct?
15. Find the value of x.
16. Find the value of x if BO and OC are angle bisectors of angle B and C respectively.

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