Written Instructions:
For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..
For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.
Leave your answers in the simplest form or correct to two decimal places.
| 1) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 40o ∠x : o ∠ y : o Answer:_______________ |
| 2) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 27o ∠x : o ∠ y : o Answer:_______________ |
| 3) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 60o ∠x : o ∠ y : o Answer:_______________ |
| 4) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 7. Hence find the unknown angles. x y 20o ∠x : o ∠ y : o Answer:_______________ |
| 5) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 9o ∠x : o ∠ y : o Answer:_______________ |
| 6) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 50o ∠x : o ∠ y : o Answer:_______________ |
| 7) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 18o ∠x : o ∠ y : o Answer:_______________ |
| 8) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 5. Hence find the unknown angles. x y 36o ∠x : o ∠ y : o Answer:_______________ |
| 9) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 8. Hence find the unknown angles. x y 26o ∠x : o ∠ y : o Answer:_______________ |
| 10) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 7. Hence find the unknown angles. x y 45o ∠x : o ∠ y : o Answer:_______________ |
| 1) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 40o ∠x : Answer: 28 o ∠ y : Answer: 112 o SOLUTION 1 : Step 1: ∠x = 2 units , ∠y = 8 units Step 2: 2 units + 8 units = 10 units Step 3: 180o - 40o = 140o Step 4: 10 units = 140o 1 unit = 140o ÷ 10 = 14o Step 5: ∠x (2 units) = 2 x 14o = 28o Step 6: ∠y (8 units) = 8 x 14o = 112o |
| 2) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 27o ∠x : Answer: 51 o ∠ y : Answer: 102 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 6 units Step 2: 3 units + 6 units = 9 units Step 3: 180o - 27o = 153o Step 4: 9 units = 153o 1 unit = 153o ÷ 9 = 17o Step 5: ∠x (3 units) = 3 x 17o = 51o Step 6: ∠y (6 units) = 6 x 17o = 102o |
| 3) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 60o ∠x : Answer: 24 o ∠ y : Answer: 96 o SOLUTION 1 : Step 1: ∠x = 2 units , ∠y = 8 units Step 2: 2 units + 8 units = 10 units Step 3: 180o - 60o = 120o Step 4: 10 units = 120o 1 unit = 120o ÷ 10 = 12o Step 5: ∠x (2 units) = 2 x 12o = 24o Step 6: ∠y (8 units) = 8 x 12o = 96o |
| 4) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 7. Hence find the unknown angles. x y 20o ∠x : Answer: 48 o ∠ y : Answer: 112 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 7 units Step 2: 3 units + 7 units = 10 units Step 3: 180o - 20o = 160o Step 4: 10 units = 160o 1 unit = 160o ÷ 10 = 16o Step 5: ∠x (3 units) = 3 x 16o = 48o Step 6: ∠y (7 units) = 7 x 16o = 112o |
| 5) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 9o ∠x : Answer: 57 o ∠ y : Answer: 114 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 6 units Step 2: 3 units + 6 units = 9 units Step 3: 180o - 9o = 171o Step 4: 9 units = 171o 1 unit = 171o ÷ 9 = 19o Step 5: ∠x (3 units) = 3 x 19o = 57o Step 6: ∠y (6 units) = 6 x 19o = 114o |
| 6) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 8. Hence find the unknown angles. x y 50o ∠x : Answer: 26 o ∠ y : Answer: 104 o SOLUTION 1 : Step 1: ∠x = 2 units , ∠y = 8 units Step 2: 2 units + 8 units = 10 units Step 3: 180o - 50o = 130o Step 4: 10 units = 130o 1 unit = 130o ÷ 10 = 13o Step 5: ∠x (2 units) = 2 x 13o = 26o Step 6: ∠y (8 units) = 8 x 13o = 104o |
| 7) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 6. Hence find the unknown angles. x y 18o ∠x : Answer: 54 o ∠ y : Answer: 108 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 6 units Step 2: 3 units + 6 units = 9 units Step 3: 180o - 18o = 162o Step 4: 9 units = 162o 1 unit = 162o ÷ 9 = 18o Step 5: ∠x (3 units) = 3 x 18o = 54o Step 6: ∠y (6 units) = 6 x 18o = 108o |
| 8) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 5. Hence find the unknown angles. x y 36o ∠x : Answer: 54 o ∠ y : Answer: 90 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 5 units Step 2: 3 units + 5 units = 8 units Step 3: 180o - 36o = 144o Step 4: 8 units = 144o 1 unit = 144o ÷ 8 = 18o Step 5: ∠x (3 units) = 3 x 18o = 54o Step 6: ∠y (5 units) = 5 x 18o = 90o |
| 9) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 3 : 8. Hence find the unknown angles. x y 26o ∠x : Answer: 42 o ∠ y : Answer: 112 o SOLUTION 1 : Step 1: ∠x = 3 units , ∠y = 8 units Step 2: 3 units + 8 units = 11 units Step 3: 180o - 26o = 154o Step 4: 11 units = 154o 1 unit = 154o ÷ 11 = 14o Step 5: ∠x (3 units) = 3 x 14o = 42o Step 6: ∠y (8 units) = 8 x 14o = 112o |
| 10) The following figure is made up of straight lines. The ratio of ∠x : ∠y is 2 : 7. Hence find the unknown angles. x y 45o ∠x : Answer: 30 o ∠ y : Answer: 105 o SOLUTION 1 : Step 1: ∠x = 2 units , ∠y = 7 units Step 2: 2 units + 7 units = 9 units Step 3: 180o - 45o = 135o Step 4: 9 units = 135o 1 unit = 135o ÷ 9 = 15o Step 5: ∠x (2 units) = 2 x 15o = 30o Step 6: ∠y (7 units) = 7 x 15o = 105o |