Angles Flashcards
What is an acute angle?
An acute angle is an angle which is between 0.01 degrees and 89.99 degrees.
What is a right angle?
A right angle is an angle which is exactly 90 degrees and can be told through its symbol which looks like a box in the corner (vertex) of the angle.
What is an obtuse angle?
An obtuse angle is an angle which is between 90.01 degrees and 179.99 degrees.
What is a straight angle?
A straight angle is an angle which is exactly 180 degrees.
What is a reflex angle?
A reflex angle is an angle which is between 180.01 degrees and 359.99 degrees
What is a revolution?
A revolution is 360 degrees exactly and is one full rotation.
What are corresponding angles?
Corresponding angles are equal. They can be remembered through the letter “F”
What are co-interior angles?
Co-interior angles add up to 180 degrees. They can be remembered through the letter “C”.
What are alternate angles?
Alternate angles are equal. They can be remembered through the letter “Z”.
What are vertically opposite angles>
Vertically opposite angles are equal. They can be remembered through the letter “X”.
What do the angles in a triangle add up to?
180 degrees
What do the angles in a quadrilateral add up to?
360 degrees
Describe the angles in a right angle triangle
One angle is 90 degrees
Describe the angles in a equilateral triangle
All angles are 60 degrees
Describe the angles in a iscocelese triangle
Two angles are the same
