10 Maths unit 4 EM

If in the triangle ABC and EDF, AB/DE = BC/FD then they will be similar,

• ∠B = ∠E

• ∠A = ∠D

• ∠B = ∠D

• ∠A = ∠FR5T

In ⊿LMN, ∠L = 60⁰ , ∠M = 50⁰. if ⊿LMN ∼ ⊿PQR then the value of∠R is

• 40⁰

• 70⁰

• 30⁰

• 110⁰

If ∆ABC is an isosceles triangle with ∠C = 90⁰ and AC = 5cm, then AB is

• 2.5cm

• 5cm

• 10cm

• 5√2am

In a given figuer ST||QR, PS = 2cm and SQ = 3cm. Then the ratio of the area of ∆PQR to the area of ∆PST is

• 25:4

• 25:7

• 25:11

• 25:13

The perimeter of two similar triangle ΔABC and ΔPQR are 36cm and 24cm respectively. If pq=10cm, then the lenght of AB is

• 6 2/3 cm

• 10√6/3 cm

• 66 2/3 cm

• 15 cm

If in ΔABC, DE||BC. AB = 3.6CM AC = 2.4cm and AD = 2.1cm then the length of AE is

• 1.4cm

• 1.8cm

• 1.2cm

• 1.0cm

In a ΔABC, AD is the bisector of ∠BCA. if AB = 8CM, BD = 6CM and DC = 3cm. The length of the side AC is

• 6cm

• 4cm

• 3cm

• 8cm

In the adjacent figure ∠BCA = 90⁰ and AD⊥BC then

• BD.CD = BC²

• AB.AC = BC²

• BD.CD = AD²

• AB.AC = AD²

Two poles of heights 6m and 1m stand vertically on a plane ground. If the distance between their feet is 12m, what is the distance between their tops?

• 13m

• 14m

• 15m

• 12.8m

In the given figure, PR=26cm, QR=24cm, ∠PAQ=90⁰, PA=6cm and QA=8cm. Find ∠PQR

• 80⁰

• 85⁰

• 75⁰

• 90⁰