Brainteasers

3rd October 2003 at 01:00
Age 8-11

Presents

Zoe, Laura, Sam, Ali and Craig each gave one of the others a present. No one got two presents.

Laura received a CD. Ali received a book. Craig gave a video.

Ali gave a scarf, but not to Craig.

Sam gave a puzzle and did not receive the scarf.

What gave what and who got what?

Age 11-15

Isosceles triangles

Draw and label an isosceles triangle ABC, where D is a point on the side BCso that the line AD divides ABCinto two new isosceles triangles, ABDand ACD.

What size are the angles of triangle ABC? There are two possible solutions.

Brainteaser solutions

from page 30

Presents

Person gave received

Zoe CD scarf

Laura book CD

Sam puzzle video

Ali scarf book

Craig video puzzle

Isosceles triangle

36 LESS THAN , 72 LESS THAN and 72 LESS THAN or 90 LESS THAN , 45 LESS THAN , 45 LESS THAN

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