Angles
... * If the side of the angle is too short to reach edge of the protractor extend it with a straightedge Triangle: angles must add up to 180 degrees, in an equilateral triangle all the angles measure 60 degrees Quadrilateral: angles must add up to 360 degrees ...
... * If the side of the angle is too short to reach edge of the protractor extend it with a straightedge Triangle: angles must add up to 180 degrees, in an equilateral triangle all the angles measure 60 degrees Quadrilateral: angles must add up to 360 degrees ...
Core Concept Cheat Sheet
... Parallelogram: a quadrilateral with two pairs of parallel sides. Plane: a flat surface that extends indefinitely in all directions; represented by a parallelogram. Plane geometry: the science of measurement; the geometry dealing with figures in a plane. Polygon: a closed plane figure with th ...
... Parallelogram: a quadrilateral with two pairs of parallel sides. Plane: a flat surface that extends indefinitely in all directions; represented by a parallelogram. Plane geometry: the science of measurement; the geometry dealing with figures in a plane. Polygon: a closed plane figure with th ...
Name: TP: ______ Failure to show all work and write in complete
... a. It is equilateral. b. The diagonals are congruent. c. It can contain obtuse angles. d. It contains no acute angles. ...
... a. It is equilateral. b. The diagonals are congruent. c. It can contain obtuse angles. d. It contains no acute angles. ...
Unit D: Discovering and Proving Triangle Properties
... Unit D: Discovering and Proving Triangle Properties (4.2 – 4.7) □ I can use properties of isosceles triangles to solve problems. □ I will find the measures of missing angles of an isosceles triangle. □ I will find the measures of sides of an isosceles triangle given the perimeter. □ I will determine ...
... Unit D: Discovering and Proving Triangle Properties (4.2 – 4.7) □ I can use properties of isosceles triangles to solve problems. □ I will find the measures of missing angles of an isosceles triangle. □ I will find the measures of sides of an isosceles triangle given the perimeter. □ I will determine ...
History of geometry
Geometry (from the Ancient Greek: γεωμετρία; geo- ""earth"", -metron ""measurement"") arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers (arithmetic).Classic geometry was focused in compass and straightedge constructions. Geometry was revolutionized by Euclid, who introduced mathematical rigor and the axiomatic method still in use today. His book, The Elements is widely considered the most influential textbook of all time, and was known to all educated people in the West until the middle of the 20th century.In modern times, geometric concepts have been generalized to a high level of abstraction and complexity, and have been subjected to the methods of calculus and abstract algebra, so that many modern branches of the field are barely recognizable as the descendants of early geometry. (See Areas of mathematics and Algebraic geometry.)