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The measures of two angles of $\triangle A B C$ are given. Find the measure of the third angle.$\mathrm{m}(\angle B)=67.25^{\circ}$ and $\mathrm{m}(\angle C)=72.5^{\circ} ;$ find $\mathrm{m}(\angle A)$

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$40.3^{\circ}$

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Chapter 9

An Introduction to Geometry

Section 3

Triangles

00:25

The measures of two angles…

00:29

00:17

00:23

00:20

02:01

In $\triangle A B C, \angl…

01:52

∠A and ∠B are complementar…

01:54

01:13

$\angle A B D$ and $\angle…

01:24

01:33

Find each angle measure.

01:35

07:44

In $\triangle A B C$, give…

02:09

$m \angle I+m \angle 2=m \…

in this problem. I'm trying to find the measure of angle A So that's but I have let X equal to measure Anglais. I know that some of the three angles totals 1 80 So that's the equation I started with. So this would be X plus. When I add these two together I get 1 39.75 Subtract that on both sides and I would get X equals 40.25 And that's the degree measure of ah Anglais, which is what I'm trying to find.

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