Question and Answers Forum

All Questions      Topic List

None Questions

Previous in All Question      Next in All Question      

Previous in None      Next in None      

Question Number 189965 by 073 last updated on 25/Mar/23

Answered by som(math1967) last updated on 25/Mar/23

$$\alpha =32+78=110$$

Commented by 073 last updated on 25/Mar/23

$$\mathrm{why}?$$

Commented by mnjuly1970 last updated on 25/Mar/23

$$C_1+C_2=180$$$$C_1+78=180$$$$$$

Commented by JDamian last updated on 25/Mar/23

Which C? there are 2 points named C in the diagram

Answered by horsebrand11 last updated on 25/Mar/23

$$\measuredangle D+\measuredangle B=180°$$$$\measuredangle B=180°-(78°+32°)$$$$\measuredangle D=\alpha =180°-(180°-\left(110°\right)))$$$$\measuredangle D=\alpha =110°$$

Answered by HeferH last updated on 26/Mar/23

Commented by HeferH last updated on 26/Mar/23

$$\mathrm{ABCD}\mathrm{is}\mathrm{cyclic}\Rightarrow \mathrm{\angle }\mathrm{DCB}=102°$$$$\mathrm{\angle }\mathrm{DCB}\mathrm{is}\mathrm{external}\mathrm{angle}\mathrm{of}\mathrm{triangle}\mathrm{with}\mathrm{side}$$$$\mathrm{DC}\Rightarrow \alpha =110°$$$$$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com