Why are triangles used in structures and buildings?
What is the strongest shape.
100
How many degrees are in a rectangle?
What is 360 degrees.
100
Which of the shapes is not a polygon? (see figure 1)
What is letter c.
100
Will a square have reflection symmetry?
Yes.
100
True or false. An angle is made from two rays that meet at a vertex point?
True.
200
What is the angle sum of a triangle?
What is 180 degrees.
200
How is a rectangle different from a rhombus?
A rhombus has four equal sides; a rectangle has opposite equal and 4 right angles.
200
What regular shapes tessellate?
What is triangle, square and hexagon?
200
In figure A, is the given diagonal a line of symmetry? Why or why not?
Yes. This is a line of symmetry because the part of the figure on the one side of it does look like it is being reflected in a mirror to form the part on the other side of the line.
200
What is the measurement of angle marked B?
What is 75 degrees.
300
Can you make a triangle from any 3 side measurements?
What is No - The sum of the smallest three sides must be greater than the third side.
300
True or False. All rhombuses are squares.
False. All squares are rhombuses.
300
Name a regular polygon that has 120 degree angles.
What is a hexagon.
300
How many lines of reflection symmetry does a circle have?
What is infinity.
300
How do you find the measure of an exterior angle?
Extend the sides and minus the interior angle from 180 degrees.
400
Can you make more than one triangle from 3 side lengths?
No, you can only make one triangle.
400
True or false. All rectangles are squares.
False. All squares are rectangles.
400
What is the angle sum of a decagon?
What is 1440 degrees.
400
Is the given diagonal in figure B a line of symmetry? Why or why not?
No. This is not a line of symmetry, because the part of the figure on the one side of it does not look like it is being reflected in a mirror to form the part on the other side of the line.
400
What is the formula for finding the angle sum of any polygon?
What is (n-2)180 = angle sum
500
Give the measurements of all of the angles shown in Figure C.
Angles B, C, F, G are 75 degrees; Angles D, E, and H are 105 degrees.
500
Name five types of quadrilaterals.
What is square, rectangle, parallelogram, trapezoid and rhombus.
500
What is the difference between a regular and an irregular polygon? Draw an example of each.
A regular polygon has all the same side lengths and same angle measurements. An irregular polygon has an least two sides with different lengths or two angles with different measures.
500
What does it mean for a shape to rotation symmetry? Give an example
A polygon with rotation symmetry can be turned around its center point less than 360 degrees and still look exactly the same for certain angles of rotation. All regular polygons and parallelograms have rotation symmetries.
500
If there is an exterior angle of 120 degrees. What is the interior angle and what shape could make if all the exterior angles were 120 degrees.