No worries! We‘ve got your back. Try BYJU‘S free classes today! Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses No worries! We‘ve got your back. Try BYJU‘S free classes today! No worries! We‘ve got your back. Try BYJU‘S free classes today! Let x = vertex angle Since all angles in a triangle add to 180 degrees, we know that 70+70+x = 180 140+x = 180 x = 180-140 x = 40 So the vertex angle is 40 degrees. If you need more help, email me at Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
Answer: Step-by-step explanation: A TRIANGLE is a polygon having 3 sides and 3 angles. A REGULAR POLYGON is a polygon which all sides and all interior angles are equal. There are 6 CLASSIFICATIONS OF TRIANGLES 1. Right Triangle - has a 90 deg angle 2. Equilateral Triangle - has 3 congruent sides and 3 congruent angles of which are 60 deg each. 3. Isosceles Triangle - has 2 equal sides and angles. 4. Scalene Triangle -All sides and angles are different from one another 5. Acute Triangle -has one of its angles lesser than 90 deg. 6. Obtuse Triangle -has one of its angles greater than 90 deg. Recall that the SUM OF INTERIOR ANGLES of a triangle is equal to 180 deg. In the above problem, it is stated that the triangle is isosceles. Therefore, its 2 sides and angles are equal, or its base angles are equal. We assume A as the measure of each base angle, giving us 70 deg, A, and A as the angles. Adding all the angles and equating them to 180 deg, would give us 70 deg + A + A = 180 deg Simplifying 70 deg + 2A = 180 deg 2A = 180 - 70 2A = 110 A = 55 deg Therefore, each base angle measures 55 degrees. Refer to the provided illustration for better understanding. For more related problems, see links below. brainly.ph/question/1968034 brainly.ph/question/1944449 brainly.ph/question/357238 |