asmaa asmaa
  • 18-10-2014
  • Mathematics
Answered

an isosceles triangle has 2 angles of 65*. what is the other angle?

Answer :

mariamikayla
mariamikayla mariamikayla
  • 18-10-2014
[tex]\angle \ a+ \angle \ b+ \angle \ c =180^0 \\\\ \angle a=\angle \ c=65^0 \\\\ 65^0+65^0+\angle \ b=180^0 \\\\ 130^0+\angle \ b=180^0 \\\\ \angle \ b=180^0-130^0 \\\\ \boxed{\angle \ b=50^0}[/tex]
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eu99li
eu99li eu99li
  • 18-10-2014
The sum of the angles of a triangle is 180°. x+ 65°+65°=180° /-130° x=50° ⇒ the 3rd angle is [tex]50°[/tex]
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