Understanding Elementary Shapes (IMO- Mathematics Olympiad Class 6): Questions 62 - 63 of 82

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Question number: 62

» Understanding Elementary Shapes

MCQ▾

Question

In figure, ABDC and ADBC. If ADB=BDC=150, find ABD and DAB.

Quadrilateral poly1 Quadrilateral poly1: Polygon A, B, C, DArc e Arc e: Semicircle through E and FArc g Arc g: Semicircle through G and HSegment a Segment a: Segment [A, B] of Quadrilateral poly1Segment b Segment b: Segment [B, C] of Quadrilateral poly1Segment c Segment c: Segment [C, D] of Quadrilateral poly1Segment d Segment d: Segment [D, A] of Quadrilateral poly1Segment f Segment f: Segment [D, B] 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) 15? text1 = “15? “15? text1_1 = “15? “

Image of a Parallelogram or Rhombus ABCD

Showing an image of a parallelogram or rhombus ABCD, so find ∠ABD and ∠DAB.

Choices

Choice (4) Response

a.

300,1200

b.

200,1600

c.

1100,150

d.

150,1500

Question number: 63

» Understanding Elementary Shapes

MCQ▾

Question

A quadrilateral is a rhombus but not a square if

Choices

Choice (4) Response

a.

The lengths of the diagonals are not equal

b.

Opposite angles are not equal

c.

Its diagonals are perpendicular

d.

Its diagonal do not bisect each other

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