Question

What is the measure of angle a?

Answer 1

when two rays meet, they make an angle, and the angle formed by two rays moving in opposite directions is known as a straight angle. A straight angle is one whose vertex point has a value of $180$ degree in geometry.

Given ∠$AOB=144\circ$

So,

∠$AOB$$+$∠$COA+$∠$DOB=180$° (angle on a straight line)

$144+a$°$+a$°$=180$°

$2a=36$

$a=18$°

So, the vaue of $a$ is $18$°.

Answer 2

Answer:

Angle a is 18 degrees.

Explanation:

Given:

angle 1 = 144

To find:

angle a

Solution:

the angle at any point on a straight line is 180 degrees. so here in this question it is given that there are 3 angles and one among them are 144 degrees and the other 2 angles are same. which denotes the following formula to solve this question.

144 + x + x = 180

144 + 2x = 180

2x = 180 - 144

2x = 36

x = 36/2

x = 18.

hence angle a is 18 degrees.

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