Question

Do This Draw ABC and form an exterior ACD. Now take a protractor and measure ACD, A and B. Find the sum A+ B and compare it with the measure ACD. Do you observe that ACD is equal (or nearly equal) to A+ B?







ड्राइंग ​

Answer 1

Answer:

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

Hence, In this case ∠A and ∠B

So,

∠A+∠B=140

∘

as ∠A=∠B

or,2∠A=140

∘

∠A=∠B=70

∘

Answer 2

Answer:

$\underline{\bf\red{please\:mark\:as\: brainliest}}$

Step-by-step explanation:

∠ACD is an exterior angle of ΔABC the measure of ∠A and ∠B are equal. If ∠ACD=140

∘

, find the measure of the angles ∠A and ∠B

Medium