Question
The measures of two angles of $\triangle A B C$ are given. Find the measure of the third angle.$\mathrm{m}(\angle A)=45^{\circ}$ and $\mathrm{m}(\angle C)=105^{\circ} ;$ find $\mathrm{m}(\angle B)$
Step 1
This is given by the formula: \[m(\angle A) + m(\angle B) + m(\angle C) = 180^{\circ}\] Show more…
Show all steps
Your feedback will help us improve your experience
Matt Gibson and 59 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The measures of two angles of $\triangle A B C$ are given. Find the measure of the third angle. $\mathrm{m}(\angle A)=4.5^{\circ}$ and $\mathrm{m}(\angle B)=128^{\circ} ;$ find $\mathrm{m}(\angle C)$
An Introduction to Geometry
Triangles
The measures of two angles of $\triangle A B C$ are given. Find the measure of the third angle. $\mathrm{m}(\angle B)=100^{\circ}$ and $\mathrm{m}(\angle A)=35^{\circ} ;$ find $\mathrm{m}(\angle C)$
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 $\mathrm{m}(\angle A)$
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD