Question

2. Three sides of a triangle ABC are given below. State whether the triangle is a right-angled triangle.
If so, find the right angle.
(a) AB -6 cm, AC - 8 cm and BC - 10 cm
(b) AB - 56 cm, BC = (2 +1) cm and AC = (2-1) cm
(c) AB=7 cm, BC -4 cm and AC -5 cm​

Answer 1

Answer:

Answer is a

Step-by-step explanation:

According to Pythagoras theorem 3,4,5 are sides of a right triangle and here

6 is a multiple of 3

8 is a multiple of 4

10 is a multiple of 5

therefore option a is correct

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Answer 2

Answer:

a] 6,8,10

Step-by-step explanation:

in a right angled triangle the angle opposite to the longest side is the right angle.

here the longest side is BC = 10cm

therefore

${ab}^{2} + {ac}^{2} = {bc}^{2}$

${6}^{2} + {8}^{2} = {10}^{2}$

$36 + 64 = 100$

therefore left side is equal to right side.

The longest side is BC, therefore the right angle is opposite to this side, which is angle A