Angles
True or False
Shapes
Symmetry
Measurements
100
What is a right angle?
A right angle measures exactly 90°.
100
All right angles are equal.
True.
100
What is a triangle?
A polygon with three sides.
100
Does an equilateral triangle have symmetry?
Yes, it has 3 lines of symmetry.
100
What is perimeter?
The distance around a shape.
200
What is an acute angle?
An acute angle is any angle less than 90°.
200
An obtuse angle is smaller than a right angle.
False.
200
What is a quadrilateral?
A polygon with four sides.
200
How many lines of symmetry does an isosceles triangle have?
One.
200
What is area?
The amount of space inside a shape.
300
What is an obtuse angle?
An obtuse angle is greater than 90° but less than 180°.
300
Acute angles are always less than 90°.
True.
300
What shape is this?
A hexagon.
300
Which has more lines of symmetry: a square or a rectangle?
A square.
300
What is the sum of angles in a triangle?
180 degrees
400
Is a 45° angle acute, right, or obtuse?
Acute.
400
A triangle can have more than one obtuse angle.
False.
400
What shape is this?
Pentagon.
400
Does a regular pentagon have lines of symmetry?
Yes, 5.
400
What are parallel lines?
Lines that never meet and stay the same distance apart.
500
Is a 90° angle acute, right, or obtuse?
Right.
500
A right angle can be acute.
False.
500
What shape is this?
An isosceles triangle.
500
Does a scalene triangle have any lines of symmetry?
No.
500
What are perpendicular lines?
Lines that intersect to form a right angle.