IMO- Mathematics Olympiad (SOF) Class 7: Questions 576 - 578 of 1012

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Question number: 576

» Triangle and Its Properties

MCQ▾

Question

A triangle whose lengths of sides are 5 cm, 12 cm and 13 cm. The triangle is ________.

Choices

Choice (4) Response

a.

Triangle is not formed

b.

Acute-angled triangle

c.

Obtuse-angled triangle

d.

Right-angled triangle

Question number: 577

» Practical Geometry - Lines and Angles

MCQ▾

Question

One of the exterior angle of a triangle is , interior opposite angles are in ratio 3: 2. The angles of triangle are

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 578

» Practical Geometry - Lines and Angles

MCQ▾

Question

In the adjoining figure, ABCD is a square, BCF is an equilateral triangle and AEDF is a rhombus. Find .

Segment f Segment f: Segment [A, B] Segment g Segment g: Segment [B, C] Segment h Segment h: Segment [C, D] Segment i Segment i: Segment [D, A] Segment j Segment j: Segment [A, E] Segment k Segment k: Segment [E, D] Segment l Segment l: Segment [A, F] Segment m Segment m: Segment [F, D] Segment n Segment n: Segment [F, B] Segment p Segment p: Segment [F, C] Segment q Segment q: Segment [G, H] Segment r Segment r: Segment [H, I] Segment s Segment s: Segment [J, K] Segment t Segment t: Segment [K, L] Vector u Vector u: Vector [M, N] Vector u Vector u: Vector [M, N] Vector u_1 Vector u_1: Vector [M_1, N_1] Vector u_1 Vector u_1: Vector [M_1, N_1] Vector v Vector v: Vector [O, P] Vector v Vector v: Vector [O, P] Vector v Vector v: Vector [O, P] Vector v_1 Vector v_1: Vector [O_1, P_1] Vector v_1 Vector v_1: Vector [O_1, P_1] Point A A = (4.39,3.48) Point A A = (4.39,3.48) Point A A = (4.39,3.48) Point B B = (6.86,3.48) Point B B = (6.86,3.48) Point B B = (6.86,3.48) Point C C = (6.88,1.14) Point C C = (6.88,1.14) Point C C = (6.88,1.14) Point D D = (4.39,1.14) Point D D = (4.39,1.14) Point D D = (4.39,1.14) Point E E = (3.6,2.34) Point E E = (3.6,2.34) Point E E = (3.6,2.34) Point F F = (5.15,2.3) Point F F = (5.15,2.3) Point F F = (5.15,2.3)

Image Made by a Square ABCD and an Equilateral Triangle

Showing an image made by a square ABCD and an equilateral triangle, so find ∠EAF

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

f Page