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In the given figure ΔBAC = ΔQRP by SAS criterion of congruence. Find the value of x and y.
In ΔABC, medians BD and CE are equal and intersect each other at O. Prove that ΔABC is an isosceles triangle.
In the given figure, PQR is a triangle in which PQ = PR. QM and RN are the medians of the triangle. Prove that
(i) ΔNQR = ΔMRQ
(ii) QM = RN
(iii) ΔPMQ = ΔPNR
In the given figure, state the rule of congruence followed by congruent triangles LMN and ONM.
Examine whether the given triangles are congruent or not.
Without drawing the figures of the triangles, write all six pairs of equal measures in each of the following pairs of congruent triangles.
(i) ΔABC = ADEF
(ii) ΔXYZ = ΔMLN
In the given figure, name
(a) the side opposite to vertex A
(b) the vertex opposite A to side AB
(c) the angle opposite to side AC
(d) the angle made by the sides CB and CA
Observe the figure and state the three pairs of equal parts in triangles ABC and DCB.
(i) Is ΔABC = ΔDCB? Why?
(ii) Is AB = DC? Why?
(iii) Is AC = DB? Why?
In the given figure, ΔQPS = ΔSRQ. Find each value.
(a) x
(b) ∠PQS
(c) ∠PSR
In the given figure, PQ = CB, PA = CR, ∠P = ∠C. Is ΔQPR = ΔBCA? If yes, state the criterion of congruence.
Lengths of two sides of an isosceles triangle are 5 cm and 8 cm, find the perimeter of the triangle.
Write the rule of congruence in the following pairs of congruent triangles.
In the given figure, PQ || RS and PQ = RS. Prove that ΔPUQ = ΔSUR.
In the given congruent triangles under ASA, find the value of x and y, ΔPQR = ΔSTU.
In the following figure, show that ΔPSQ = ΔPSR.
In the given figure, AP = BQ, PR = QS. Show that ΔAPS = ΔBQR
Prove that the lengths of altitudes drawn to equal sides of an isosceles triangle are also equal.
(i) ∠TRQ = ∠SQR?
(ii) If ∠TRQ = 30°, find the base angles of the ΔPQR.
(iii) Is ΔPQR an equilateral triangle?
In the given figure, state whether ΔABC = ΔEOD or not. If yes, state the criterion of congruence.
Can two equilateral triangles always be congruent? Give reasons.