RS Aggarwal Class 7 Math Fifteenth Chapter Properties of Triangles Exercise 15B Solution

RS Aggarwal Class 7 Math Fifteenth Chapter Properties of Triangles Exercise 15B Solution

EXERCISE 15B

(1) In the figure given alongside, find the measure of ∠ACD.

(2) In the figure given alongside, find the values of x and y.

(3) In the figure given alongside, find the values of x and y.

(4) An exterior angle of a triangle measure 110^o and its interior opposite angles are in the ratio 2 : 3. Find the angles of the triangle.

(5) An exterior angle of a triangle is 100^o and their interiors opposite angles are equal to each other. Find the measure of each angle of the triangle.

(6) In the figure given along side, find:

(i) ∠ACD        (ii) ∠AED

(7) In the figure given alongside, find:

(i) ∠ACD        (ii) ∠ADC       (iii) ∠DAE

(8) In the figure given alongside, x : y = 2 : 3 and ∠ACD = 130^o. Find the values of x, y and z.