1. Find m1 [] 30 [] 33 [] 57 [] 63

Question

asked Apr 21, 2019 235k views

2 Answers

Firuz · Answer 1 · 2019-04-22T20:46:41+0000

Answer:

A.30 degrees

Explanation:

We are given that a triangle in which

$m\angle 2=117^(\circ)$

$m\angle 3=33^(\circ)$

We have to find the value of
$m\angle 1$

We know that

$m\angle 1+m\angle 2+m\angle 3=180^(\circ)$

Sum of angles of a triangle =180 degrees

$m\angle 1+117+33=180$

$m\angle 1+150=180$

$m\angle 1=180-150=30$

$m\angle 1=30^(\circ)$

Hence, option A is true .

Nimmy · Answer 2 · 2019-04-28T07:48:07+0000

Triangle Angle-Sum Theorem: The sum of the measures of interior angles is equal to 180°.

Then

m∠1+117°+33°=180°,

m∠1+150°=180°,

m∠1=180°-150°,

m∠1=30°.

Answer: option A