Page 35 - CT&AI_CLasa_7_Part_1

a tale of three

7 intersecting Lines

computational thinking quest

Tick ( ) the correct option.

1. There are three positive numbers in each 4. How many triangles are there in the figure?
case. Which of these numbers could possibly (Decomposition)
be the lengths of the sides of a triangle?
(Logical Thinking)

(a) 2, 10, 15 (b) 5, 7, 9

(c) 1, 8, 9 (d) 2, 5, 7
(a) 9 (b) 10
2. In triangle ABC, 3∠A = 4∠B = 6∠C what are
the values of ∠A, ∠B and ∠C? (c) 12 (d) 16
(Critical Thinking) 5. The two sides of a triangle are 24 cm and 30
cm of the third side is x, which of the following
(a) ∠A = 80°, ∠B = 60°, ∠C = 40°
is true? (Analytical Thinking)

(b) ∠A = 70°, ∠B = 60°, ∠C = 50° (a) 18 cm < x < 48 cm

(c) ∠A = 80°, ∠B = 40°, ∠C = 60° (b) 18 cm ≤ x ≤ 54 cm

(d) ∠A = 60°, ∠B = 80°, ∠C = 40° (c) 18 cm < x < 54 cm
3. Four identical pieces of paper, each shaped (d) 6 cm < x < 54 cm
like an isosceles right triangle, are joined edge
to edge without gaps or overlaps. What figure 6. In triangle ABC, if AB = BC = 11 cm and ∠B is
is formed by arranging these pieces? 30° more than ∠A, then the measure of ∠C is
. (Logical Thinking)
(Decomposition)
(a) Square (a) 50°

(b) Rectangle (b) 70°

(c) 30°
(c) Both (a) and (b)

(d) 80°
(d) Neither (a) nor (b)

A Tale of Three Intersecting Lines 33