Angle Laws Math

All angles equal 60 degrees. Base angles are equal. Reciprocal identities pythagorean identities even and odd identities periodic identities double angle identities half angle identities sum and diff.

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Right angle a right angle is an angle with measure equal to 90 degrees.

Angle laws math. Straight angle a straight angle is an angle with measure equal to 180 degrees. An angle in geometry an angle is the rotation required to superimpose one of two intersecting lines on the other. The exterior angle equals the sum of the two interior opposite angles. To explore the truth of this rule try math warehouse s interactive triangle which allows you to drag around the different sides of a triangle and explore the relationship between the angles and sides.

Using these properties we can write a system of equations. Undefined control sequence measuredangle. Add to and opposite angles are congruent i e. Law of sines law of cosines law of tangents mollweid s formula.

This may be one the most well known mathematical rules the sum of all 3 interior angles in a triangle is 180. Add to 180 degrees. Undefined control sequence measuredangle. Sum to product ident.

Exterior angle of triangle. An acute angle an acute angle is an angle with a measure between 0 and 90 degrees. In a parallelogram consecutive angles are supplementary i e. Angle sum of triangle.

Trig laws math help. Product to sum ident. As you can see from the picture below if you add up all of the angles in a triangle the sum must equal 180.