Question 11 MarkState AAA similarity criterion.AnswerIf in two triangles, corresponding angles are respectively equal then the triangles are similar.View full question & answer→
Question 21 MarkIn Fig. PQR is a triangle in which PS and QT are altitudes from P and Q respectively, intersecting each other at M. Prove that $\triangle Q S M \sim \triangle P T M$.AnswerselfView full question & answer→
Question 31 MarkIn Fig. ABC is a triangle in which $D E \| B C$, AD = 3 cm, BD = 4 cm and AC = 14 cm. Find the length of AE.Answer6 cmView full question & answer→
Question 41 MarkIn Fig. $\frac{E A}{E C}=\frac{E B}{E D}$, prove that $\triangle E A B \sim \triangle E C D$.AnswerselfView full question & answer→
Question 51 MarkIn Fig. ABCD is a cyclic quadrilateral. Diagonal BD bisects $\angle B$ and $\angle D$ both. Prove that(i) $\triangle A B D \sim \triangle C B D$, (ii) AB = BC.AnswerselfView full question & answer→
Question 61 MarkABC is an isosceles triangle right angled at C with AC = 4cm Find the length of AB.Answer$4 \sqrt{2}$ cmView full question & answer→
Question 71 MarkIn Fig. 7.173, $D E \| B C$. Find the length of side AD, given that AE = 1.8 cm BD = 7.2 cm and CE = 5.4 cmAnswer2.4 cm View full question & answer→
Question 81 MarkIn Fig. $\triangle A H K$ is similar to $\triangle A B C$. If AK = 10cm BC = 3.5cm and HK = 7cm find AC.Answer5 cm View full question & answer→
Question 91 MarkIn Fig. $D E \| B C$ and $A D=\frac{1}{2} B D$. If BC = 4.5 cm, Find DE.Answer1.5 cmView full question & answer→
Question 101 MarkThe lengths of the diagonals of a rhombus are 30 cm and 40 cm. Find the side of the rhombus.Answer25 cmView full question & answer→
Question 111 MarkIn Fig. DE || BC in $\triangle A B C$ such that BC = 8cm AB = 6 cm and DA = 1.5cm Find DE.Answer2 cmView full question & answer→
Question 121 MarkIf $\triangle A B C$ and $\triangle D E F$ are similar triangles such that AB = 3 cm, BC = 2 cm, CA = 2.5 cm and EF = 4 cm, write the perimeter of $\triangle D E F$.Answer15 cmView full question & answer→
Question 131 MarkIf $A B C$ and $D E F$ are similar triangles such that $\angle A=57^{\circ}$ and $\angle E=73^{\circ}$, what is the measure of $\angle C$?Answer$50^{\circ}$View full question & answer→
Question 141 MarkIn $\triangle A B C$, D and E are points on sides AB and AC respectively such that $D E \| B C$. IF AD = 2.4 cm, DB = 3.6cm and AC = 5 cm. Find AE.Answer2 cmView full question & answer→
Question 171 MarkIn Fig. if AD is the bisector of LA, what is AC?Answer4 cm View full question & answer→
Question 191 MarkState basic proportionality theorem and its converse.AnswerselfView full question & answer→