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

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

#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?

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

#geometrypuzzle

24

#mathsconf38 Love this @catrionaagg.bsky.social!

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

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

#geometrypuzzle

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

Six greetings cards with geometry puzzles drawn on the front.

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

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

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

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

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

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

#geometrypuzzle

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

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

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

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

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

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 ?

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?