What is the size of the angle at the top labeled A?
2 answers:
All triangles have 180°.
As you can see from this triangle, it is an isosceles triangle, because the two angles are the same (I can assume that the two sides are, as well).
As we have two exterior angles that are perpendicular, we can assume that:
The interior angles is 70 degrees.
We have two interior angles that are the same, so it totals up to 140 degrees.
As mentioned, a triangle has 180 degrees.
Let's use logic.
The angle measures exactly 40 degrees.
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As the figure is not attached, I have attached the figure using the link- https://cdn.ple.platoweb.com/EdAssets/6764fbd04e1f4014be049f2831fd4e8c?ts=635356393812430000
Answer:
Area is 30 square inches.
Step-by-step explanation:
Given:
The wooden cutout of the lightning bolt consists of 2 right angled triangles with the legs being 10 inches and 3 inches.
The area of this lightning bolt will be equal to the sum of the areas of the two right angled triangles.
The area of a triangle of base 'b' and height 'h' is given as:
Here, . Plug in solve for area of one of the triangles.
Therefore, area of the right angled triangle is:
Now, the two right angled triangles are congruent. So, total area is twice the area of one of the triangle.
Therefore, total area of the lightning bolt is in².
