Define a right angle and give an example of where it can be found.
What is an angle measuring exactly 90 degrees. Examples can be found in squares, rectangles, and triangles.
100
Define a straight angle and describe when this is helpful.
What is an angle measuring exactly 180 degrees. It is helpful when finding the number of degrees in an angle without measuring it.
100
Define equilateral triangle. What is the measure of the angles in this triangle?
What is a triangle with equal sides and equal angles. Each angle measures 60 degrees.
100
Define regular polygon. Give a real-world example.
What is a shape where all sides and angles are equal. Examples might include, a STOP sign, square floor tiles, rectangular ceiling tiles, and many more.
100
Classify this angle: 30 degrees
What is an acute angle.
200
Define an obtuse angle and give an example.
What is an angle measuring less than 180 degrees and greater than 90 degrees. Examples include 181 degrees, 91 degrees and 138 degrees.
200
The first step when measuring with a protractor.
What is lining up the vertex with the point at the center of the protractor and one of the rays with the straight line at the bottom of the protractor.
200
Define isosceles Triangle.
What is a triangle with AT LEAST two equal sides.
200
Define tessellation. Hint: What is not allowed in a tessellation?
What is a repeating pattern with no gaps or overlaps.
200
Classify this shape: a polygon with three sides, two of them are equal.
What is an isosceles triangle.
300
Define an acute angle and give an example.
What is an angle measuring between 0 and 90 degrees. Examples include 89 degrees, 1 degree and 45 degrees.
300
The second step of measuring an angle with a protractor. Hint: How do you decide which angle measure to use?
What is reasoning. Use what you know about acute, obtuse, right and reflex angles to determine which measure makes the most sense.
300
Define scalene triangle.
What is a triangle that has no equal sides.
300
Define parallel lines. Give a real-world example.
What is two lines that will never touch or intersect, they stay the same distance apart. Examples might include the lines on the ceiling or floor.
300
Classify this angle: 301 degrees.
What is a reflex angle.
400
Define a reflex angle and give an example.
What is an angle that is greater than 180 degrees. Examples include 181 degrees, 350 degrees, and 199 degrees.
400
The total number of degrees in a triangle. Why is it important to know, and when can this information be useful?
What is 180. It is useful when determining the number of degrees in an angle without measuring it.
400
Compare and contrast equilateral and isosceles triangles. How are they alike? How are they different?
BONUS: Can an equilateral triangle also be an isosceles triangle? Explain
What is both triangles have at least two equal angles and two equal sides. An equilateral triangle has ALL equal sides and angles. An isosceles must only have two of each.
BONUS: yes!
400
Define congruent. Give an example of a shape that has congruent angles and congruent sides.
What is having the EXACTLY the same size and shape. Any regular polygon has congruent sides and angles. Examples include an equilateral triangle, a regular pentagon, or a square.
400
Classify this shape: a polygon with three sides, none of which are the same length.
What is a scalene triangle.
500
Define an adjacent angle and give an example.
What is two or more angles that are side by side, share the same vertex and have a common ray. Draw an example on the board.
500
The total measure of degrees in a circle. Why and when might this be important to know or useful?
What is 360. When finding the measure of smaller angles within polygons that meet at a point.
500
DAILY DOUBLE!!!
Compare and contrast equilateral and scalene triangles. How are they alike? How are they different?
What is both triangles have total angle measure of 180 degrees. In an equilateral triangle, ALL sides have the same length, but in a scalene triangle, NO sides have the same length.
500
Define quadrangle. Give a real-world example.
BONUS: Does a quadrangle always have parallel lines? Give an example.
What is a polygon or shape with four sides and angles.
BONUS: No. Example will be drawn on the board.
500
The number of degrees in each angle of a pentagon.
Hint: think of how many degrees in are circle and how many angles are in a pentagon?