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If one angle of a triangle is 90 degrees then the other two add to 90 degrees what is the given and the proof?
Wiki User
∙ 13y ago
180
Elza Larkin
Wiki User
∙ 13y agoGiven: A triangle; one of its angles is 90 degrees.
Outline of proof: Use the fact that the sum of angles in a triangle is 180 degrees; do some simple algebra to get the sum of the other angles.
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What is the measure of the third angle of a triangle if one angle measures 15 degrees and the other measures 85 degrees?
The sum of the measures of the angles of a triangle is 180 degrees. First, calculate the sum of the two known angles. Then subtract that result from 180. That difference is the measure of the third unknown angle. Given: One angle of a triangle is 15 degrees and the second angle of the triangle is 85 degrees. To find: We need to find the third angle of the triangle. Let the third angle of the triangle be x. We know that the sum of the angles in a triangle is 180 degrees. ==> 15 degrees + 85 degrees + x degrees = 180 degrees. ==> 100 degrees + x degrees = 180 degress. ==> x = 180 degrees - 100 degrees. ==> x = 80 degress. Therefore the third angle of the triangle is 80 degrees.
What triangle has angles of 71 degrees and 62 degrees?
A scalene triangle and the other angle is 47 degrees
One acute angle in a right triangle is 40 what is the measure of the other acute angle in the triangle?
50 degrees
If one of the angles of a triangle is 66 degrees and the other is 68 degrees what is the other angle?
36
One angle of an isosceles triangle measures 56 degrees what are the measures of the other two angle?
62 degrees
What is the of the third angle of a triangle if angle a is 70 degrees and the other angle is 80 degrees?
30 degrees
What is the measure of the third angle of a triangle if one angle measures 15 degrees and the other measures 85 degrees?
The sum of the measures of the angles of a triangle is 180 degrees. First, calculate the sum of the two known angles. Then subtract that result from 180. That difference is the measure of the third unknown angle. Given: One angle of a triangle is 15 degrees and the second angle of the triangle is 85 degrees. To find: We need to find the third angle of the triangle. Let the third angle of the triangle be x. We know that the sum of the angles in a triangle is 180 degrees. ==> 15 degrees + 85 degrees + x degrees = 180 degrees. ==> 100 degrees + x degrees = 180 degress. ==> x = 180 degrees - 100 degrees. ==> x = 80 degress. Therefore the third angle of the triangle is 80 degrees.
What type of triangle has an angle that measures 20 degrees and an angle that measures 90 degrees?
right triangle and the other angle would be 70 degrees. Hope I helped :)
Is an obtuse triangle a right triangle?
its a triangle * * * * * No, it an obtuse triangle is not a right angle triangle. An obtuse angled triangle has one angle which is greater than 90 degrees and the other two are acute. In a right angled triangle, the largest angle is 90 degrees while the other two are acute. So one cannot be the other.
What triangle has angles of 71 degrees and 62 degrees?
A scalene triangle and the other angle is 47 degrees
If one acute angle on a right triangle is forty five degrees what is the measure of the other acute angle in the triangle?
since it is a right triangle there is one 90 degree angle and another of the angles is 45 degrees. there is 180 degrees in a triangle so the missing angle is 45 degrees.
How do you calculate an acute angle?
You can either use a protractor or, if you're given the other angles in a triangle, you can subtract them from 180. An acute angle is an angle less that 90 degrees.
What is the missing angle of a triangle if one angle is 35 degrees and the other angle is 62 degrees?
Thmissing angle is 83
What is the missing angle if an angle measures 30 degrees 90 degrees what is the other angle?
If it's a right angle triangle then the the third angle is 60 degrees.
What is the angle of a triangle is 75degrees and the other one is 75degrees?
The third angle is 30 degrees and it is an isosceles triangle.
What is the measure of the third angle of a right triangle if one of the angles measures 50 degrees?
The other acute angle in that triangle is 40 degrees.
In a right-angled triangle besides the right - angle one of the angles measures 30 degrees what does the other angle measures?
60 degrees. There are 180 degrees in a triangle.
