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It works out as: 180 minus the 2 known angles = unknown angle

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Q: How do the properties of an isosceles triangle an equilateral triangle and a right triangle how you find the measure of unknown angles?
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Related questions

What triangle is formed with three sides of different lengths?

A scalene triangle. In a scalene triangle, there are no congruent sides or angles. In an isosceles triangle, at least two congruent sides and angles. In an equilateral triangle, all three sides and angles are congruent, with angles that always measure sixty degrees. Note: an equilateral triangle also classifies as an isosceles triangle, as it meets the definition of an isosceles triangle mentioned above.


What are the kinds of triangle according to measure of sides?

An isosceles triangle has 3 sides 2 of which are equal in lengths An equilateral triangle has 3 sides all of which are equal in lengths


Equilateral triangle has one angle that is exactly 90 degrees?

An equilateral triangle is a special isosceles triangle in which all three sides are congruent. Equilateral triangles are also equiangular, which means all three angles are congruent. The measure of each angle is 60 degrees.


If two sides of a triangle both measure 3 centimeters what type of triangle is it?

It is probably an isosceles triangle.Isosceles triangle = 2 sides the same lengthUnless the 3rd side is also 3cm, in which case it would be an equilateral triangle.


What are the identifying features of an isosceles triangle?

An isosceles triangle has two equal sides (and a third that is a different measure). It can also be identified by the fact that it has two equal angles and the third is different. The above also mean that two of the three altitudes, medians, etc are equal while the third is different. If the third measure is not different the triangle is equilateral.


How many degrees should there be in an isosceles triangle?

In the equilateral triangle, all the sides are the same length and all the angles are the same size (congruent). Since the sum of the angles of a triangle is always 180 degrees, we can figure out the measure of the angles of an equilateral triangle.Another Answer:-An isosceles triangle has 2 equal base angles plus another angle and the 3 interior angles add up to 180 degrees.


Angles of isoceles triangle?

The interior angles of a triangle add up to 180. So a triangle with 3 equal sides (or angles) will have 60-degree angles. * * * * * True, but the question is about an isosceles triangle, not an equilateral triangle. The angles of an isosceles triangle are x, x and 180-2x degree where x is a measure between 0 and 90 degrees.


Which triangle has two angles which are the saw measure?

It is an isosceles triangle


How do you know the measure of each angle in an equilateral triangle using what you know about equilateral triangles and the degree measure of a circle or a straight angle?

the sum of the angles of a plane triangle is always 180° In an equilateral triangle, each of the angles is = Therefore, the angles of an equilateral triangle are 60°


A triangle with all angles the same measure?

An equilateral triangle.


What are some different triangles?

You have acute, right, and obtuse triangles when referring to the measure of the largest angle, and you have equilateral, isosceles, and scalene triangles when referring to the congruency of the triangle's sides.


What is the measure of the interior angle of an equilateral triangle?

Each of the interior angles of an equilateral triangle is 120 degrees.