Draw a triangle that is both a right triangle and an isosceles triangle. you can use either pencil and paper, or a draw program.

label the angles. what are the measurements of the angles that are not equal to 90 degrees?

describe the two sides opposite the angles that are not equal to 90 degrees.
now draw an equilateral triangle. label the measurements of the angles.

can an equilateral triangle ever be a right triangle too? explain your answer.
finally, draw a right triangle. can this triangle ever have an obtuse angle?

explain your answer.