Question

Find the measure of angle 1

Answer 1

`\huge\boxed{\sf < 1 = 58\°}`

Explanation:

Statement:

• Internal angles of a triangle add up to 180 degrees.

Solution:

So,

30 + 92 + ∠1 = 180

122 + ∠1 = 180

Subtract 122 to both sides

∠1 = 180 - 122

∠1 = 58°

`\rule[225]{225}{2}`

Answer 2

b

Explanation:

the sum of the 3 angles in the triangle = 180° , that is

∠ 1 + 92° + 30° = 180°

∠ 1 + 122° = 180° ( subtract 122° from both sides )

∠ 1 = 58°