Standard 3.G.1.1
Complete the statement by picking the choice that makes the sentence true.
A ______ is a quadrilateral with sides all the same length and may not have right angles.
A. Triangle B. Rhombus C. Rectangle D. Square
What is B, Rhombus?
From the list of shapes below, draw the one that has at least one obtuse angle.
1. Rectangle 2. Right Triangle 3. Square 4. Pentagon
Hint: Polygons that are not quadrilaterals can be drawn differently.
What is a Pentagon?
The following clues describe a secret shape:
1. The shape has exactly one pair of parallel sides
2. The shade does not have any right angles
3. The shape is both a polygon and a quadrilateral
What is a trapezoid?
What other shape can a rhombus be aside from a parallelogram?
What is a kite?
Are polygons closed or open shapes?
What is a closed shape?
Which shape would be considered a quadrilateral?
A. Circle
B. Triangle
C. Trapezoid
D. Hexagon
What is C?
Which shape would have one obtuse angle?
A. Rectangle
B. Right Triangle
C. Scalene Triangle
D. Pentagon
What is a pentagon?
Select all the shapes that always contain two sets of parallel lines.
A. parallelogram
B. Rhombus
C. Triangle
D. Quadrilateral
E. Rectangle
F. Square
What is A, B, E, and F?
True or false: A rectangle can be a square
False
What polygon has three sides, and can be four different types of it?
Triangle: isosceles, scalene, right, and equilateral
Show what intersecting lines would look like using your arms.
Look like an "x"
What is an acute angle?
An acute angle measures greater than 0 degrees, but less than 90 degrees.
Four shapes have been sorted into two groups.
Group one has shapes with two right angles in each one.
Group two has shapes with one square and one equilateral triangle.
What two attributes were used to sort the shapes in group 1?
A. at least one acute angle, a pair of parallel lines
B. At least one right angle, a pair of parallel lines
C. At least one obtuse angle, a pair of perpendicular lines
D. At least one right angle, a pair of perpendicular lines
What is choice D?
What shape is considered the "lone wolf"?
What is a trapezoid?
What polygon has 5 sides?
Pentagon
Draw a quadrilateral that a square could be, but that quadrilateral cannot be a square.
What is a rectangle, rhombus, or parallelogram?
What is an obtuse angle?
An obtuse angle is greater than 90 degrees, but less than 180 degrees.
Figure out the secret shape based on these clues:
I have four sides
I have four angles
At least one of my angles is a right angle
All angles are equal and all sides are equal
What is a square?
Why can only a square be a rectangle but a rectangle cannot be a square?
It can be a rectangle because it has four sides, four right angles, and two pairs of parallel lines. A rectangle does not have all equal sides, therefore cannot be a square.
What polygon has 8 sides?
Octagon
Select the answer choices that both a rhombus and a rectangle share together.
A. all right angles B. all obtuse angles C. 4 sided D. 4 angles E. Opposite sides are the same length F. all sides are the same length
What is C, D, and E?
What is the difference between a straight angle and an obtuse angle?
A straight angle measures 180 degrees, whereas an obtuse angle measures less than 180 degrees, but greater than 90 degrees.
What am I?
I have one right angle
I am a polygon
I have two congruent sides
I have three sides
What is a right triangle?
How many triangles fit into a square?
Two!
What polygon has 10 sides?
Decagon