Geometry

• An isosceles triangle has two sides of equal length.
• In an equilateral triangle, all three sides are congruent (equal) and all three interior angles measure 60 degrees.
• Perpendicular bisector is a perpendicular line that passes through the midpoint of a given line segment.
• The midpoint divides a segment into two congruent segments.
• A line is the shortest distance between two points.
• Acute triangles have all angles that measure less than 90 degrees.
• The Pythagorean theorem can be used to find the length of one side of a right triangle if the lengths of the other two sides are known.
• A right triangle has one angle measuring exactly 90 degrees.
• The Pythagorean Theorem states that the square of the hypotenuse (the longest side) equals the sum of the squares of the other two sides.
• Parallel lines never meet or intersect.
• Two parallel lines can be represented by the symbol ||
• The height of a triangle is the altitude drawn from its highest point.
• The formula for finding the circumference of a circle is C = 2πr, where r is the radius.
• The area of a rectangle is calculated as base times height.
• The perimeter of a polygon is the total distance around all of its edges.
• The intersection point where two perpendicular lines meet is called their vertex.
• In an obtuse triangle, one angle measures greater than 90 degrees but less than 180 degrees.
• Lines that cross at a right angle are called perpendicular lines.
• An acute triangle has three angles smaller than 90 degrees.
• A line segment with no endpoints is considered infinite.
• To find the midpoint of a line segment, add the coordinates of both endpoints together and divide them equally.
• A square is a quadrilateral with four right angles.