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Two triangles are similar if:
- two pairs of corresponding angles are equal, or
- one pair of angles is equal, and the ratios of the lengths of sides adjacent to the angles are the same, or
- the lengths of the three pair of corresponding sides are in the same ratio.
For the first point, if two angles of one triangle are equal to two of the other, then the third angles = 180 - sum of the two, must be equal.
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What are the five ways to prove a triangles congruent?
The 5 ways to prove that two triangles are congruent are to find equal: 1) side-side-side 2) side-angle-side 3) angle-side-angle 4) angle-angle-angle 5) hypotenuse-leg
How do you Compare and contrast an isosceles triangle and an acute triangle?
First, figure out what ways they are similar. Then, figure out what ways they are different. For example, they are both triangles, but iscoceles has 4 syllables, while acute only has two.
How many triangles are there in a three by three grid?
9 squares = 18 triangles * * * * * The correct answer is 76. There are 9 points in the grid. You can pick any 3 out of these 9 points in 9*8*7/(3*2*1) = 84 ways. However, 3 will form horizontal lines in the grid, 3 will form vertical lines in the grid, and 2 will form diagonal lines in the grid. None of these 8 triplets will form triangles, but all the rest will. So the answer is 84-8=76.
How many triangles are in a kite?
Well, that depends on the Kite. You can divide it in a number of ways. But on a standard kite, there's 4.
How many triangles in a 13 sided polygon?
To determine the number of triangles that can be formed within a 13-sided polygon, we can use the formula nC3, where n is the number of vertices in the polygon. In this case, n = 13. So, 13C3 = 286 triangles can be formed within a 13-sided polygon.
