Mathematics
Grade9
Easy
Question
If 
, then the measure of 
= _____________.
- 80°
- 40°
- 100°
- 20°
Hint:
properties of rectangle
opposite sides are parallel and equal to each other.
Each interior angle is equal to 90 degrees.
The sum of all the interior angles is equal to 360 degrees.
diagonals bisect each other.
Both the diagonals have the same length.
The correct answer is: 40°
The diagonals of a rectangle are equal ( diagonals bisect each other)
So, AB = BD = BC = BE
In isosceles triangle 
, AB = BE
So, 
Related Questions to study
Mathematics
In the envelope ACDB, if AD = 7 cm, then find the length of diagonal BC.
In the envelope ACDB, if AD = 7 cm, then find the length of diagonal BC.
MathematicsGrade9
Mathematics
The value of g in parallelogram PQRS is ____.
Opposite sides are parallel ( distance between the opposite sides will be equal)
Opposite sides are congruent.
Opposite angles are same and congruent as well.
diagonals of a parallelogram bisect each other.
Each diagonal of a parallelogram separates it into two congruent triangles.
Same-Side interior angles (consecutive angles) are supplementary
The value of g in parallelogram PQRS is ____.
MathematicsGrade9
Opposite sides are parallel ( distance between the opposite sides will be equal)
Opposite sides are congruent.
Opposite angles are same and congruent as well.
diagonals of a parallelogram bisect each other.
Each diagonal of a parallelogram separates it into two congruent triangles.
Same-Side interior angles (consecutive angles) are supplementary
Mathematics
For what values of x is a rectangle?
For what values of x is a rectangle?
MathematicsGrade9
Mathematics
If the measure of DN is 8 cm, then the measure of diagonal PH is ____.
If the measure of DN is 8 cm, then the measure of diagonal PH is ____.
MathematicsGrade9
Mathematics
Find 
if STAY is a rectangle.
Find if STAY is a rectangle.
MathematicsGrade9
Mathematics
If is a rectangle, what is the measure of 
?
If is a rectangle, what is the measure of ?
MathematicsGrade9
Mathematics
Find the perimeter of the chocolate.
Find the perimeter of the chocolate.
MathematicsGrade9
Mathematics
What is the measure of 
?
What is the measure of ?
MathematicsGrade9
Mathematics
What is the value of x if WXYZ is a parallelogram?
What is the value of x if WXYZ is a parallelogram?
MathematicsGrade9
Mathematics
If PQRS is a parallelogram, then the value of p is _________.
If PQRS is a parallelogram, then the value of p is _________.
MathematicsGrade9
Mathematics
The measure of angle x is ________.
The measure of angle x is ________.
MathematicsGrade9
Mathematics
The measure of 
is ___________.
The measure of is ___________.
MathematicsGrade9
Mathematics
The measure of angle X is _____________.
The measure of angle X is _____________.
MathematicsGrade9
Mathematics
The measure of the unknown angle x is ________.
The measure of the unknown angle x is ________.
MathematicsGrade9
Mathematics
The given figure is a _________.
The given figure is a _________.
MathematicsGrade9
