What type of angle is 90 degrees?
Right angle
All 3 angles in a triangle add up to how many degrees?
180 degrees
How many sides does a quadrilateral have?
4
A square has one side that is 12 cm long. What is the PERIMETER of the square?
48 cm
How many sides does a hexagon have?
6
How many degrees are in a straight angle?
180 degrees
What is this triangle called?
Equilateral Triangle (also acute triangle)
True or False? A rhombus must have 4 right angles.
False
A square has one side that is 12 cm long. What is the AREA of the square?
144 square cm
True or False? Parallel lines cross at a 90 degree angle.
False
What type of angle is this angle?
Obtuse
What kind of triangle has 3 sides with different lengths?
Scalene triangle
True or False? A rhombus must have 4 equal side lengths.
True
If an equilateral triangle has a side length of 24 cm, what is the PERIMETER of the triangle?
72 cm
What tool is used to measure degrees in an angle?
Protractor
A triangle has at least _____ acute angles?
2
What makes a triangle equilateral?
All sides are equal in length (and all angles are equal).
Which quadrilateral has exactly one pair of parallel lines?
Trapezoid
A parallelogram has side lengths of 21 cm and 30 cm. What is the PERIMETER of the parallelogram?
102 cm
What are line segments that intersect at an angle of 90 degrees called?
Perpendicular
If two angles are complementary, what is the sum of their degrees?
90 degrees
What is a triangle classified as when it has 2 sides of equal length?
Isosceles
Name the 4 types of quadrilaterals that have two pairs of parallel sides.
Parallelogram, Rectangle, Square, Rhombus
A rectangle has sides of 23 cm and 51 cm. What is the AREA of the rectangle?
1,173 square cm
Draw an irregular polygon.
*Answer will vary*