Observe the figure and complete the following activity.
In `DeltaABC` and `DeltaEDC`,
`/_ABC~=/_square`…….(Each measures `46^(@)`)
`/_C~=/_C`…..(`square`)
`:.DeltaABC~DeltaEDC`…….[`square` test for similarity]

Observe the following figure and complete the following activity : /_ ABC " is " 90^@

In the adjoining figure, BP bot AC , CQ bot AB , A-P-C , A-Q-B . Complete the following activity to Prove DeltaAPB~DeltaAQC . In DeltaAPB and DeltaAQC /_APB=square^(@) ……. (1) /_AQC=square^(@) …….. (2) :./_APB~=/_AQC …....( square ) :.DeltaAPB~DeltaAQC ......( square )

In trapezium PQRS , side PQ|| side SR , AR=5AP , AS=5AQ then prove that SR=5PQ by completing the following activity. In DeltaPQA and DeltaRSA , /_PQA~=/_RSA ……( square ) /_PAQ~=/_RAS ....( square ) :.DeltaPQA~DeltaRSA ......( square ) (PQ)/(SR)=(square)/(AR) .........(Corresponding sides of similar triangles)..... (1) Substituting AR=5AP in (1) :.(PQ)/(SR)=(square)/(5AP) :.(PQ)/(SR)=(square)/(5) :.SR=5PQ

Observe the figure and state whether DeltaABC is similar to DeltaPQR ? If so , by which test ?

In the following figure, O is the centre of the circle. /_ ABC is inscribed in arc ABC and /_ ABC = 65^(@) . Complete the following activity to find the measure of /_ AOC Activity : /_ ABC = (1)/(2) m square …..(Inscribed angle theorem) :. square xx 2 m (arc AXC) :. m (arc AXC = square /_ AOC = m (arc AXC)... (Definition of measure of minor arc) :. /_ AOC = square

In the figure seg PQ|| seg DE, A(DeltaPQF)=20 units PF=2DP ,then find A(square DPQE) by completing the following activity: Activity: A(DeltaPQF)=20 sq units, PF=2DP . Let us assume DP=x :.PF=2x DF=DE+square=square+square=3x In DeltaFDE and DeltaFPQ . /_FDE~=/_square ..........(Corresponding angles) /_FED~=/_square .....(Corresponding angles) :.DeltaFDE~DeltaFPQ .....(AA test) :.(A(DeltaFDE))/(A(DeltaFPQ))=(square)/(square)=((3x)^(2))/((2x)^(2))=9/4 A(DeltaFDE)=9/4A(DeltaFPQ)=9/4xxsquare=square A(squareDPQE)=A(DeltaFDE)-A(DeltaFPQ) =square-square =square

DeltaABC~DeltaDEF, BC=4.8cm EF=7.2cm . Complete the following activity to find A(DeltaABC):A(DeltaDEF) . Activity: DeltaABC~DeltaDEF (A(DeltaABC))/(A(DeltaDEF))=(BC^(2))/(square^(2)) .....Theorem on _________ :.(A(DeltaABC))/(A(DeltaDEF))=(4.8^(2))/((square)^(2)) :.(A(DeltaABC))/(A(DeltaDEF))=4/(square) A(DeltaABC):A(DeltaDEF)=4:square

Replace square in each of the following by the correct number :(a) 2/7=8/square (b) 5/8=10/square (c) 3/5=square/20 (d) 45/60=15/square (e) 18/24=square/4

The six faces of a die are marked [A],[B],[C],[D],[O],[F]. The event M is getting a vowel on the upper face of the die when it is rolled. Complete the following activity and find the probability of the event : S={square},n(S)=square M={square},n(M)=square P(M)=(n(M))/(n(S))=(square)/(square)=square

In the figure, m (arc LN ) =110^(@) , m ( ar PQ ) = 50^(@) then complete the following activity to find /_ LMN /_ LMN = (1)/(2) [ m ( arc LN ) =- square ] :. /_ LMN = (1)/(2) [ square - 50^(@) ] :. / _ LMN = (1)/(2) xx square :. /_ LMN = square