Question

4m
140°
To
2m
find the unknown marked angles​
those who will give my answer I will mark them as brainliest.

Answer 1

4m = 80° and 2m = 40°.

• A triangle is a polygon with three vertices and three sides. The angles of the triangle are formed by the connection of the three sides that meet at a point. The triangle's three angles add up to 180 degrees in total. The sum of a triangle's outside angles is 360 degrees. A triangle's shortest side is always on the other side of its smallest angle.
• Triangles of the scalene, isosceles, and equilateral varieties differ from one another in terms of side length. The triangle is a scalene triangle if the lengths of the three sides are all different. An isosceles triangle is one with all three sides having equal lengths. It is an equilateral triangle if the lengths of the three sides are equal.

Here, according to the given information, we are give that,

The exterior angle of a triangle is given as 140°

Now, the supplementary angle is 180 - 140 = 40°

Now, we know that an exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Then, we get,

4m = 40 + 2m

Or, 2m = 40

Or, m = 20.

Then, 4m = 80° and 2m = 40°.

Hence, 4m = 80° and 2m = 40°.

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