2D figures
A quadrilateral with 4 congruent sides, 2 sets of parallel lines, and 4 right angles.
Square
What angle measures at exactly 90 degrees?
Right angle
Lines that intersect to form a right angle
Perpendicular lines
What is the formula for finding the area of a rectangle?
A= Lx W
What is the formula to find the perimeter of a rectangle?
P= add up all the sides
P= L+L+W+W
P= (Lx 2) + (W x2)
2 pairs of congruent sides, 2 pairs of parallel lines, 4 right angles
rectangle
What angle measures exactly 180 degrees?
Straight angle
Lines that cross to form shapes like a V or the top of a Y
Intersecting Lines
What is the area of a rectangle with a length of 7 and a width of 9?
7 x 9 =63 square units
What is the perimeter of a SQUARE with a side length of 6 inches?
6+6+6+6= 24 inches
4 congruent sides, 2 sets of parallel lines, 2 acute angles, 2 obtuse angles
Rhombus
What angle measures less than 90 degrees?
Acute angle
Lines that go on forever and will NEVER intersect
Parallel lines
What is the area of a rectangle that has a length of 12 inches and a width of 4 inches?
12 x 4= 48 square inches
What is the perimeter of a rectangle that has a length of 10 and a width of 4?
10+ 10+ 4+4+ 28 units
2 pairs of congruent sides, 2 pairs of parallel sides, 2 acute angles, 2 obtuse angles
Parallelogram
What angle measures greater than 90 degrees but less than 180?
Obtuse
A ____ ______ is a part of a line that connects 2 points
Line Segment
What is the area of a square that has a side length of 8 centimeters?
8 x 8= 64 square centimeters
What is the perimeter of a rectangle that has a length of 26 and a width of 3 inches?
26+26+3+3= 58 inches
1 set of parallel sides, 2 acute angles, 2 obtuse angles, (sometimes has 2 right angles1 acute 1 obtuse)
Trapezoid
What is the name of the tool used to measure angles?
Protractor
A ____ starts at one point and continues in a straight line in one direction with no end
What is the area of a rectangle that has a length of 14 inches and a width of 9 inches?
14 x 9= 126 square inches
What is the perimeter of a rectangle with a width of 15 centimeters and a length of 12 centimeters?
15+15+12+12= 54 cm