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How many lines of symmetry does a right triangle have?
Right triangles can have only one line of symmetry. Only right triangles with two 45 degree angles can have a line of symmetry.
Why can some isosceles triangles be ringt angle triangles?
An isosceles triangle only requires that two of its inside angles be equal to eachother. Therefore, a right angle triangle (90 degree inside angle) with two 45 degree inside angles on the the two other corners would be considered an isoceles triangle. However, this would be the ONLY right angle triangle that would be considered an isoceles triangle since all inside angles must add up to 180 (90+45+45=180).
Two lines are perpendicular if they cross at 45 degree angles?
Two lines are perpendicular if they cross at 90 degree angles.
What is meant when they say put at a 45 degree angle?
A 90 degree angle can be bisected into two 45 degree angles with a compass and straight edge The diagonals of a square bisect their opposite corners into 45 degree angles
What are the two complementary angles?
There is an infinite number of complementary angles. Complementary angles are all angles that add up to 90 degrees, such as two 45 degree angles.
