Circles
A figure consisting of points all equidistant from a point called the center.
What is a circle?
A triangle where two sides are congruent
What is an isosceles triangle?
A triangle has a base of 5 inches and a height of 10 inches. What is the area of a the triangle?
25 inches
A three sided polygon
What is a triangle?
Shayna is selling 7 pounds of salmon for $7.00. Hindy is selling 3 pounds of salmon for $6.00. Which store has the better deal?
Shayna
A quadrilateral where both pairs of opposite sides are parallel; the opposite angles are equal and consecutive angles are supplementary.
What is a parallelogram?
The middle of a circle.
What is the midpoint or the center.
A triangle where no sides are congruent
What is scalene?
21 inches and 18 inches
A four sided figure
What is a quadrilateral?
Ali has an outdoor minyan on her block. The minyan has 4 chairs in a row. There are 5 rows. Using rows as your unit of measurement, what is the perimeter?
28
A quadrilateral with exactly one pair of parallel sides.
What is a trapezoid?
A line from the edge of the circle to the midpoint.
What is a radius?
A triangle where all three sides are congruent
What is equilateral?
A square has one side that is 5 inches. What is the perimeter of the square?
20 inches
A straight line has ____ degrees
What is 180?
Chana also has an outdoor minyan on her block. The minyan has 5 chairs in a row. There are 6 rows. How many chairs are there in total?
30 chairs
A parallelogram with four congruent sides
What is a Rhombus?
How many sides does a circle have?
Zero
A triangle where one angle is above 90 degrees
What is an obtuse triangle?
A parallelogram has a length of 12 in. and a width of 6 inches. What is the area of the parallelogram?
72 inches
Angles that add up to 90 degrees.
What are Complementary Angles?
Penina draws a shape with 4 equal sides. What shape did she draw?
A square or rhombus
A parallelogram with four right angles
What is a rectangle?
A line that goes from one edge of the circle all the way through to another point on the edge of the circle AND goes through the midpoint
What is the diameter?
A triangle where one angle is exactly 90 degrees
What is a right triangle?
A circle has a radius of 8 inches. What is the circumference of the circle? (Leave it in terms of pi)
16 pi
Lines that run opposite from each other and will never meet.
What are parallel lines?
Atara wrote her homework questions on a piece of square paper. Each side of the paper is 8 centimeters. What is the perimeter?
32 centimeters
A parallelogram with four right angles AND four congruent sides
What is a square?
A line segment that endpoints are on the circle
What is a chord?
A triangle where all three angles are smaller than 90 degrees
What is an acute angle?
16 pi
Another word for equal specific to Geometry
What is congruent?
Dassi draws a shape that has 6 sides. What shape did she draw?
Hexagon
Length X Width
What is the formula for Area of a Parallelogram (except for a rhombus)?
2 radius X π(Pi) OR diameter X π (Pi)
What is the formula for circumference?
180 degrees
What is how many degrees in a triangle?
BONUS QUESTION: Where did Mr. Cohen go to High School?
MTA
Angles that add up to 180 degrees
What are Supplementary Angles?
Leba and Talia likes to watch Marvel Movies. They theorize that Captain America’s circular shield has a diameter of 14 centimeters. What is the area of his shield if they are correct? (Leave in terms of pi)
49 pi
Side1 + Side2+Side3.....
What is the formula for Perimeter?
Radius2 X π (Pi)
What is the formula for Area of a Circle?
Base X Height ÷ 2
What is the formula for Area of a Triangle?
BONUS QUESTION: What type of doctor does Mr. Cohen aspire to be?
A Fetal Surgeon
Lines that intersect to create a 90 degree angle.
What are perpendicular lines?
Ruchama bought a new round backpack. Its area is 81 pi inches. What is the round backpack’s diameter?
18 inches
Opposite sides in a parallelogram are _________.
What is congruent?