Angles
What type of angle is less than 90°?
Acute angle
A triangle with all equal sides is called what?
Equilateral Triangle
Lines that never meet are called what?
Parallel lines
How many sides does a quadrilateral have?
4
Which shape has exactly or at least one pair of parallel sides?
Trapezoid
What type of angle is exactly 90°?
Right angle
A triangle with 2 equal sides is called what?
Isosceles triangle
Lines that meet at a right angle are called what?
Perpendicular lines
Parallelogram
True or False:
All trapezoids are parallelograms
False
What type of angle is greater than 90°?
Obtuse angle
A triangle with no equal sides is called what?
Scalene triangle
Do parallel lines ever intersect?
No
Which shape has 4 equal sides and 4 right angles?
Square
Which is true?
All squares are rhombuses OR all rhombuses are squares
All squares are rhombuses
True or False:
An obtuse angle is smaller than a right angle?
False
What type of triangle has a 90° angle?
Right triangle
Draw or describe perpendicular lines.
Lines that form a corner or right angle.
True or False:
All squares are rectangles.
True
Can a rectangle also be a rhombus?
Yes, if all sides are equal (square)
Name one real-life example of a right angle.
Corner of a book, paper, door frame, etc.
Can a triangle be both right and isosceles?
Yes
Can a shape have both parallel and perpendicular lines?
Yes
Name TWO shapes that have all sides equal.
Square and Rhombus
Which shape fits BOTH:
All sides equal.
Has right angles
Square