Types of quadrilaterals are discussed here:
A quadrilateral whose opposite sides are parallel and equal is called a parallelogram. Its opposite angles are equal.
Here LMNO is a parallelogram.
(i) LM is parallel to ON.
LO is parallel to MN.
(ii) LO = MN
LM = ON
(iii) ∠L = ∠N
∠M = ∠O
(i) So, AB is parallel to DC.
AD is parallel to BC.
(ii) AD = BC
AB = DC
(iii) ∠A = ∠B = ∠C = ∠D = 90°
(i) AB is parallel to DC.
BC is parallel to AD.
(ii) AB = BC = CD = DA.
(iii) ∠A = ∠B = ∠C = ∠D = 90°
A rhombus is a parallelogram whose all sides are equal, opposite sides are parallel and opposite angles are equal.
Here LMNO is a rhombus.
(i) LM = MN = NO = OL
(ii) ∠L = ∠N
∠O = ∠M
(iii) LM is parallel to ON
OL is parallel to MN
AB is parallel to DC
Comparing the sides and angles of the different quadrilateral are discussed above.
Construction of Perpendicular Lines by using a Protractor.
Sum of Angles of a Quadrilateral.
Practice Test on Quadrilaterals.
5th Grade Geometry Page
5th Grade Math Problems
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