Shapes
What do you call a shape with four sides?
What is a quadrilateral
An angle that forms 90 degrees is called what?
A right angle
What do you call a part of a line with two endpoints?
a line segment
What is the formula for finding the area of a rectangle?
length × width
What do we use to measure angles?
a protractor
A square has four equal sides and four right angles. True or False?
True
An angle smaller than a right angle is called what?
an acute angle
Lines that never cross and stay the same distance apart are called what?
parallel lines
A rectangle is 4 units long and 3 units wide. What is its area?
12 square units
What do we call the point where two lines, rays, or segments meet?
point of intersection
Which shape has no straight sides and no corners?
a circle
An angle larger than a right angle is called what?
an obtuse angle
Lines that cross and form right angles are called what?
perpendicular lines
What is the formula for finding the perimeter of a rectangle?
length + width + length + width
What kind of line goes straight up and down?
a vertical line
This shape has only one pair of parallel sides.
A trapezoid
A straight angle measures how many degrees?
180 degrees
What is it called when two lines cross but do not form a right angle?
intersecting lines
A square has a perimeter of 20 units. What is the length of one side?
5 units?
What is the name of a part of a line that starts at one point and goes on forever in one direction?
a ray
Name a quadrilateral with opposite sides that are equal and four right angles.
A rectangle?
A shape has angles that measure 90°, 90°, 90°, and 90°. What is the total sum of all the angles?
360°
What is the name of a point where two sides of a shape meet?
a vertex
A rectangle has a length of 7 and a width of 6. What is the area AND perimeter?
Area: 42 square units
Perimeter: 26 units
What do we call the exact middle of a line segment?
the midpoint