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Maths CBSE Live product
Class 7
A Tale of Three Intersecting lines
Exterior Equals the Sum!
7.
Calculate the unknown angle
Question:
5
m.
In the following figure, \(m =\)
112
\(°\).
Find the measure of \(\angle EAC\).
Answer:
Obtained values
Property used
\(x\) \(=\)
\(^{\circ}\)
An exterior angle of a triangle is equal to the sum of its opposite interior angles.
Vertically opposite angles are equal
The sum of the measure of three angles of a triangle is 180°
\(y\) \(=\)
\(^{\circ}\)
An exterior angle of a triangle is equal to the sum of its opposite interior angles.
The sum of the measure of three angles of a triangle is 180°
Vertically opposite angles are equal
\(\angle EAC\) \(=\)
\(^{\circ}\)
Vertically opposite angles are equal
An exterior angle of a triangle is equal to the sum of its opposite interior angles.
The sum of the measure of three angles of a triangle is 180°
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