ICSE ICSE Class 7 - CISCE Question Bank Solutions

State, if the triangle is possible with the following angles :

20°, 70°, and 90°

State, if the triangle is possible with the following angles :

40°, 130°, and 20°

State, if the triangle is possible with the following angles :

60°, 60°, and 50°

State, if the triangle is possible with the following angles :

125°, 40°, and 15°

If the angles of a triangle are equal, find its angles.

In a triangle ABC, ∠A = 45° and ∠B = 75°, find ∠C.

In a triangle PQR, ∠P = 60° and ∠Q = ∠R, find ∠R.

Calculate the unknown marked angles of the following figure :

Calculate the unknown marked angles of the following figure :

Find the value of the angle in the given figure:

Find the value of the angle in the given figure:

Find the unknown marked angles in the given figure:

Find the unknown marked angles in the given figure:

Find the unknown marked angles in the given figure:

Find the unknown marked angles in the given figure:

In the given figure, show that: ∠a = ∠b + ∠c

(i) If ∠b = 60° and ∠c = 50° ; find ∠a.
(ii) If ∠a = 100° and ∠b = 55° : find ∠c.
(iii) If ∠a = 108° and ∠c = 48° ; find ∠b.

Calculate the angles of a triangle if they are in the ratio 4: 5: 6.

One angle of a triangle is 60°. The other two angles are in the ratio of 5: 7. Find the two angles.

One angle of a triangle is 61° and the other two angles are in the ratio `1 1/2: 1 1/3`. Find these angles.

Calculate the unknown marked angles of the following figure :