unit 1 test study guide geometry basics answer key

1. angles: angles measure the amount of turn between two rays that have a common endpoint. A full angle measures 360 degrees. 2. lines: lines are straight paths that extend infinitely in two directions. 3. points: points have no dimensions and are located in space by coordinates. 4. planes: planes are flat surfaces that extend infinitely in all directions. 5. triangles: triangles are closed shapes with three sides and three angles. 6. quadrilaterals: quadrilaterals are closed shapes with four sides and four angles. 7. circles: circles are closed shapes with one infinitely long curved line.

1. What are basic geometry terms? A. Basic geometry terms include point, line, line segment, ray, angle, circle, arc, polygon, surface area, volume, and parallel lines. 2. What are the properties of a triangle? A. The properties of a triangle include that it is a closed three-sided shape, all angles add up to 180°, and its sides must be in proportion. Additionally, depending on the angles of the triangle, the triangle can be equiangular, isosceles, or scalene. 3. How do you calculate the area of a rectangle? A. To calculate the area of a rectangle, multiply the length of the rectangle by its width. The formula is A=L x W.