Ashape is made of 12 right triangles of equal size each triangle has a base of 4 cm and a height of 5 cm what is the total area in square meters of the shape

the formula for the area of a triangle is 1/2 (base x height) so 1/2 of 20 is 10 ,you do 10 times 12 which is 120. So the area is 120 sq cm.

angles 1 and 3 are vertical angles, meaning that they are equal to each other. to solve this you may set angle 1 and 3 equal to each other and just solve for x like

110 = 2x + 10

100 = 2x

50 = x

check:

110 = 2* 50 + 10

110 = 100 + 10

110 = 110

hope this !

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