Geometry
A tool for measuring angles
a protractor
What is the measure of a right angle?
90 degrees
What do you call 2 lines that never touch?
Parallel lines
Describe a square in 2 ways
4 equal sides
4 right angles (perpendicular sides)
2 pairs of parallel sides
A straight path of points that goes on and on in two directions
a line
All obtuse angles measure
greater than 90 degrees
What is a line segment?
A line with a point on each end
Describe a rectangle in 2 ways
4 sides - 2 are short and 2 are long
4 right angles (perpendicular sides)
2 pairs of parallel sides
A location in space is called a
Point
All acute angles measure
less than 90 degrees
Lines that meet and form right angles are called
perpendicular lines
Describe a pentagon in 2 ways
5 sides
5 obtuse angles
no parallel sides
What is the measurement of a straight line?
180 degrees
What is a ray?
A line with a point on one end and goes on forever in the other direction
A triangle that has one angle that is more than 90 degrees and all sides are not equal
obtuse scalene triangle
Describe a parallelogram in 2 ways
4 sides - 2 short and 2 long
2 acute angles
2 obtuse angles
2 pairs of parallel sides
When a figure has similar or corresponding parts facing each other or around an axis, often exhibiting a balanced or regular arrangement it is called
symmetrical
An angle measures 45 degrees. A second angle measures 32 degrees. What is the combined measurement of both angles? And what kind of angle is it?
77 degrees, acute angle
An angle is made of
A triangle that has angles that are all less than 90 degrees and has equal sides
What is an acute equilateral triangle
Describe a trapezoid in 2 ways
4 sides
1 pair of parallel sides
2 acute angles
2 obtuse angles