An isosceles triangle is a triangle that has two equal sides and two equal angles. If you are told that an answer is incorrect, go back and redo that question and CHECK ANSWERS again. presents: FREE! Project Gutenberg (named after the printing press that democratized knowledge) is a huge archive of over 53,000 books in EPUB, Kindle, plain text, and HTML. Log in Sign up. Use the picture to answer the question. Watch your geometrical fortunes soar with these ready-to-print area of an isosceles triangle worksheets! ΔABC is an isosceles triangle with . Mathematics. And then you have 36 degrees as one of your base angles. We can recognise an isosceles triangle because it will have two sides marked with lines. a) m