Question

Help pls I don’t understand

Answer 1

Explanation:

• QUESTION 3
• 
  `\triangle ABC` is inscribed in circle with centre O. OA, OB and OC are it's radii.

• Now, In
  `\:\triangle AOB` and
  `\:\triangle COB`

• 
  `OA\cong OC` (radii of same circle)
• 
  `\angle AOB \cong\angle COB` (Given)
• 
  `OB\cong OB` (common side)

• 
  `\rightarrow \:\red{\triangle AOB\cong \triangle COB}`(By SAS congruence postulate)

• QUESTION 4
• In
  `\:\triangle ABE` and
  `\:\triangle CBE`

• 
  `AB\cong CB` (Given)
• 
  `\angle ABE \cong\angle CBE` (Given)
• 
  `BE\cong BE` (common side)
• 
  `\rightarrow \:\orange{\triangle ABE\cong \triangle CBE}`(By SAS congruence postulate)