All Lessons Flashcards
It is a non dimensional element
Point
This refers to the shortest distance between two points
Line
This are lines parallel to the lower edge of the paper
Horizontal line
Are lines drown from top to bottom
Vertical lines
Are lines which are directed either to the left or to the right
Inclined lines
Are lines which make an angle of 90 degrees with eachother
Perpendicular lines
Are lines on the same plane which will not meet no matter how long you extend them
Parallel lines
It is formed by two intersecting lines. Angles may be right, straight, acute, obtuse, complementary or supplementary.
Angle
Is any plane figure bounded by straight lines.
Polygons
Is a plane figure bounded by straight sides, and the sum of the interior angles is always 180°
Triangle
A triangle where all sides are equal
Equilateral
A triangle which has one angle equal to 90°
Right
A triangle wherein no sides or angles are equal
Scalene
A triangle whose 2 sides and 2 included angles are equal
Isosceles
These are a closed plane figures bounded by four straight sides
Quadrilateral
A qd. Whose four sides are all equal
Square
A qd. Whose opposite sides are equal and whose angles are also right angles
Rectangle
A qd. Whose sides are equal and whose sides are equal and whose opposite angles which may not be right angles are also equal
Rhombus
A qd. With two opposite sides are equal and with two angles which may be other than right angles equal
Rhomboid
A plane figures with two parallel sides. The four sides and angles are not eqaul
Trapezoid
A plane figure all the sides and angles of which are not equal
Trapezium
Is a closed curve all points of which are the same distance from a point called center
Cirlpcle
Any taken part of the circumference is called an ___?
Arc
A straight line passing through the center of a figure meeting the circumference at both ends.
Diameter
is a line segment from the center to any point on the circle.
Radius/ Radii(plural)
Any straight line which does not pass through the center of the circle and is drawn across the figure meeting its circumference at both ends
Chord
a part of a circle which is bounded by a chord and an arc.
Segment
Refers to any straight line which touches a particular point in the circumference.
Tangent
It is a portion of a circle bounded by an arc and a chord
Sector
Refers to the part of a circle which is bounded by two radii forming 90 and an arc.
Quadrant