In the given figure, D is the midpoint of OE and ∠CDE = 90°. Prove that ΔODC ≡ ΔEDC

In the figure, ∠TMA ≡ ∠IAM and ∠TAM ≡ ∠IMA . P is the midpoint of MI and N is the midpoint of AI. Prove that ΔPIN～ΔATM.

Construct the following quadrilaterals with the given measurements and also find their area.
MIND, MI = 3.6 cm, ND = 4 cm, MD = 4 cm, ∠M = 50° and ∠D = 100°.

Construct the following quadrilaterals with the given measurements and also find their area.
WORK, WO = 9 cm, OR = 6 cm, RK = 5 cm, ∠O = 100° and ∠R = 60°.

Fill in the blanks with the correct term from the given list.
(in proportion, similar, corresponding, congruent shape, area, equal)
(i) Corresponding sides of similar triangles are _______.
(ii) Similar triangles have the same _________ but not necessarily the same size.
(iii) In similar triangles, ______ sides are opposite to equal angles.
(iv) The symbol ≡ is used to represent _______ triangles.
(v) The symbol ～ is used to represent ________ triangles