Quarter 3 ( Angle & Shapes ) Flashcards
What type of angle is 90 degrees?
Right angle
What are opposite and congruent angles formed by the same line called?
Vertical angles
What is formed by two rays with a common vertex; the space between the rays?
An angle
What type of triangle has three sides all the same length?
Equilateral
What is the name for the distance around the outside of a circle?
Circumference
What type of triangle has no sides that are the same?
Scalene
What is a shape with four sides called?
Quadrilateral
What is the name for two angles that share a common ray and vertex?
Adjacent angles
What type of triangle has all acute angles?
Acute triangle
What type of triangle has one obtuse angle?
Obtuse triangle
What type of triangle has one right angle?
Right triangle
What is the name for the distance from the center to the edge of a circle (half of the circle’s diameter)?
Radius
What is the name for the sum of multiple angles if they add up to 180 degrees?
Supplementary angle
What is a quadrilateral with two pairs of parallel sides called?
Parallelogram
What shape has four sides?
Quadrilateral
What is the name for a straight line going through the center of a circle?
Diameter
What shape has seven sides?
Heptagon
What shape has six sides?
Hexagon
What shape has eight sides?
Octagon
What is a quadrilateral with four right angles and opposite parallel sides called?
Rectangle
What is a quadrilateral with four congruent sides and no right angles called?
Rhombus
What is a rectangle with four congruent sides and right angles called?
Square
What is a quadrilateral with one pair of parallel opposite sides called?
Trapezoid
What shape has nine sides?
Nonagon