Polygons
Angles
Triangles
Quadrilaterals
Generalizations
100
A closed figure made up of line segments.
What is a polygon?
100
This is the term for a 90-degree angle.
What is a right angle?
100
A triangle that has all sides the same length.
What is equilateral?
100
This is a quadrilateral with two pairs of opposite sides parallel AND 4 right angles.
What is a rectangle?
100
All parallelograms have exactly two pairs of parallel sides.
Correct.
200
This is a 4-sided polygon.
What is a quadrilateral?
200
An angle that is less than 90 degrees.
What is an acute angle?
200
A triangle with two sides the same length.
What is isosceles?
200
This is a quadrilateral with two pairs of opposite sides parallel AND all sides the same length. (It does not have to have right angles.)
What is a rhombus?
200
All parallelograms have 4 right angles.
Not correct - For example, a rhombus does not have right angles.
300
This is a 5-sided polygon.
What is a pentagon?
300
An angle that is greater than 90 degrees.
What is an obtuse angle?
300
A triangle with ONE angle greater than 90 degrees.
What is obtuse triangle?
300
This is a special type of rectangle and rhombus.
What is a square?
300
All right triangles have exactly one right angle.
Correct.
400
This is a 6-sided polygon.
What is a hexagon?
400
The sum of the angles in a triangle.
What is 180 degrees?
400
A triangle with a 90-degree angle and no sides the same length.
What is a right, scalene triangle?
400
This type of quadrilateral includes all rectangles, rhombuses, and squares.
What is a parallelogram?
400
All polygons have straight sides.
Correct.
500
This is an 8-sided polygon.
What is an octagon?
500
This is used to measure angles.
What is a protractor?
500
A triangle with all acute angles.
What is an acute triangle?
500
This is a quadrilateral with ONLY ONE pair of opposite sides parallel.
What is a trapezoid?
500
All polygons are regular.
Not correct - For example, a scalene triangle has 3 different side lengths.
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