IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 319 - 320 of 1059

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Question number: 319

» Understanding Elementary Shapes

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MCQ▾

Question

In figure, and If . Find

Quadrilateral poly1 Quadrilateral poly1: Polygon A, B, C, D Arc e Arc e: Semicircle through F and G Arc g Arc g: Semicircle through M and N Arc h Arc h: Semicircle through Q and R Segment a Segment a: Segment [A, B] of Quadrilateral poly1 Segment b Segment b: Segment [B, C] of Quadrilateral poly1 Segment c Segment c: Segment [C, D] of Quadrilateral poly1 Segment d Segment d: Segment [D, A] of Quadrilateral poly1 Segment f Segment f: Segment [A, C] Point A A = (4,4) Point A A = (4,4) Point A A = (4,4) Point B B = (7.86,4) Point B B = (7.86,4) Point B B = (7.86,4) Point C C = (6.7,1.38) Point C C = (6.7,1.38) Point C C = (6.7,1.38) Point D D = (2.72,1.4) Point D D = (2.72,1.4) Point D D = (2.72,1.4) 55? text1_1 = “55? “ 55? text1_2 = “55? “

Image of a Parallelogram or Rhombus ABCD with Two Angles

Showing an image of a parallelogram or rhombus ABCD, so find ∠ADC.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 320

» Understanding Elementary Shapes

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MCQ▾

Question

The measure of and in the following figure is

Arc c Arc c: Semicircle through G and H Ray f Ray f: Ray through O, A Ray g Ray g: Ray through O, B Ray h Ray h: Ray through O, C Segment i Segment i: Segment [D, E] Segment j Segment j: Segment [E, F] Ray k Ray k: Ray through O, I Point O O = (5.28,2) Point O O = (5.28,2) Point O O = (5.28,2) Point A A = (5.3,5.26) Point A A = (5.3,5.26) Point A A = (5.3,5.26) Point B B = (1.84,4.28) Point B B = (1.84,4.28) Point B B = (1.84,4.28) Point C C = (9.54,2) Point C C = (9.54,2) Point C C = (9.54,2) Point I I = (1.52,2) Point I I = (1.52,2) Point I I = (1.52,2) 90? text1 = “90? “ 145? text2 = “145? “

Image of Four Lines Making Three Angles

Showing the image of four lines making three angles so find the angle AOB and BOI

Choices

Choice (4) Response

a.

b.

c.

d.