Author | Lightnews

Reposted

Catriona Agg @catrionaagg.bsky.social · Jul 5

The three rectangles are congruent. What fraction of the design is shaded?

#geometrypuzzle

Three partially shaded congruent rectangles, with unshaded triangles connecting some of the corners.

13 16 58

Reposted

Catriona Agg @catrionaagg.bsky.social · Jun 28

Four quarter circles. What’s the area of the orange one?

#geometrypuzzle

Red, pink and orange quarter circles meet at a point inside a white quarter circle. The red one’s area is 12. What’s the area of the orange one?

10 11 35

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 28

24

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Jo Morgan @mathsjem.bsky.social · Jun 21

#mathsconf38 Love this @catrionaagg.bsky.social!

4 6 39

Reposted

Catriona Agg @catrionaagg.bsky.social · Jun 21

These triangles are congruent and isosceles. What’s the area of the semicircle?

#geometrypuzzle

A blue triangle on top of a purple one, inside a semicircle. The side length of the purple triangle is 4.

6 9 29

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 16

Two squares, a semicircle and a rectangle make the following figure. The red square touch the semicircle. Prove that, Red square area is equal to the total area of yellow square and blue rectangle.
#geometrypuzzle

2

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Catriona Agg @catrionaagg.bsky.social · Jun 15

Today’s project: colouring in some cards for the #MathsConf38 tuck shop @rjs2212.bsky.social

Six greetings cards with geometry puzzles drawn on the front.

6 8 66

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 15

A square and a semicircle make the following figure. What is the red angle?
#geometrypuzzle

3 5 11

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 14

All shapes are squares. The percentage of shaded area.
#geometrypuzzle

1 3

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 14

Two squares and a semicircle. The length of extended side of small square is 2. Find out the blue area.
#geometrypuzzle

1 2 4

Reposted

Catriona Agg @catrionaagg.bsky.social · Jun 14

Four squares. What’s the blue square’s area?

#geometrypuzzle

Two yellow squares both with area 9, an unshaded square, and a blue square whose area is to be found.

6 5 28

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 14

1 6

Reposted

Catriona Agg @catrionaagg.bsky.social · Jun 11

My PGCE trainee finishes her placement with us this week, so I’ve made her a very geeky card 🤓

A card with the text ‘What’s the shaded area?’ and four partially-shaded semicircles in different colours.

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ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 13

Two rectangles and a square. The length of long side of the red rectangle is 4. What is the total colored area?
#geometrypuzzle

2 2 9

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 12

The length of the square is 'a' and O is the center of the circle. Find out the yellow area in terms of 'a'.

2

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 12

Two identical squares make the following figures. The length of green line is 4. What is the area of blue triangle?

2

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 10

The radius of the circle and the side length of the each small square are equal. The red area is 'A' . What is the area of blue square ?

1

ronysarker71.bsky.social @ronysarker71.bsky.social · Jun 8

Two isosceles triangle and their top angle is 45 degree. The length of the equal sides are 4. What is the area of red color?

3