Question

2. Solve for the unknowns a) b) (4x) (3y + 5) X 652 52 I

Answer 1

D C B In triangle ABC AB = BC = AC ABC is equilateral triangle So, LA = LB = LC = 60° and, Angle DBA + Angle CBA = 180° linear angle property >> x + LB : 180° X 180° - LB 180°- 60° x = 120 equation In thiangle DBA L is a symbol for angle D9 = BA SO y = LBAD L BAD means, Angle BAD y+ x + LBAD = 180° (Sum of interior angle of a triangle) => Y+x+ y = 180° 2y = 1800 x 2y = 180° - 120° { from equation , 12.09 60° y = 30° Answer And, 1200

(5) B (3yrs) 65° M520 D. In thiangle BDC LB + LD + LC = 180° LDBL + L BDCA LOLA = 180° → 13y+5)+ 52°+ 90º = 180° -> (@y+5) = 180°- 142° (3y+5)° = 38° シ - ) 3y +5=38 34 : 33 yall

Now, Since AB is AB is parallel to co Soi since, L ABD = LBDL [A Alternate interior angles are equal] (43) ° : 52° una 52 x=13 So, x=13 Answers